# myDaemon example in installation node always shows "My Daemon failed" **URL:** \ **Category:** URCap Development\ **Created:** [May 15, 2018, 4:06pm UTC](https://forum.universal-robots.com/t/mydaemon-example-in-installation-node-always-shows-my-daemon-failed/1986 "2018-05-15T16:06:18Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![anon48814700](https://avatars.discourse-cdn.com/v4/letter/a/aeb1de/32.png) [@anon48814700](https://forum.universal-robots.com/u/anon48814700)\ **Post date:** [May 15, 2018, 4:06pm UTC](https://forum.universal-robots.com/t/mydaemon-example-in-installation-node-always-shows-my-daemon-failed/1986/1 "2018-05-15T16:06:18Z")
Hi everyone, I am new to URcaps and recently I’ve tried to deploy the myDaemon example from the folder of URCaps SDK1.2.41 and deploy it to URSim3.5.3.10825 on local computer. I’ve used $mvn install -P ursim to build and it works. However in the installation node of Polyscope there is always an error which shows ← Dsplay the current run status of the daemon, updated with a 1 Hz, utilizing a java.util.Timer → My Daemon failed. Both Daemon with cpp and python don’t work. I’ve also tried to deploy into URSim in Virtual Mashine and it works, why???Can someone please help? **Building the project** $ mvn install -P ursim [INFO] Scanning for projects… [WARNING] [WARNING] Some problems were encountered while building the effective model for com.ur.urcap.sample:XMLRPCmath:bundle:1.0-SNAPSHOT [WARNING] ‘build.plugins.plugin.version’ for org.apache.maven.plugins:maven-jar-plugin is missing. @ line 49, column 12 [WARNING] [WARNING] It is highly recommended to fix these problems because they threaten the stability of your build. [WARNING] [WARNING] For this reason, future Maven versions might no longer support building such malformed projects. [WARNING] [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building XMLRPCmath 1.0-SNAPSHOT [INFO] ------------------------------------------------------------------------ [INFO] [INFO] — maven-resources-plugin:3.1.0:resources (default-resources) @ XMLRPCmath — [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent! [INFO] Copying 3 resources [INFO] [INFO] — maven-compiler-plugin:3.7.0:compile (default-compile) @ XMLRPCmath — [INFO] Nothing to compile - all classes are up to date [INFO] [INFO] — maven-bundle-plugin:2.4.0:manifest (bundle-manifest) @ XMLRPCmath — [INFO] [INFO] — maven-resources-plugin:3.1.0:testResources (default-testResources) @ XMLRPCmath — [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent! [INFO] skip non existing resourceDirectory /home/einfisch/Downloads/com.ur.urcap.sample.XMLRPCmath/src/test/resources [INFO] [INFO] — maven-compiler-plugin:3.7.0:testCompile (default-testCompile) @ XMLRPCmath — [INFO] Nothing to compile - all classes are up to date [INFO] [INFO] — maven-surefire-plugin:2.21.0:test (default-test) @ XMLRPCmath — [INFO] [INFO] ------------------------------------------------------- [INFO] T E S T S [INFO] ------------------------------------------------------- [INFO] Running com.ur.urcap.sample.XMLRPCmath.impl.AppTest [INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.032 s - in com.ur.urcap.sample.XMLRPCmath.impl.AppTest [INFO] [INFO] Results: [INFO] [INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0 [INFO] [INFO] [INFO] — maven-bundle-plugin:2.4.0:bundle (default-bundle) @ XMLRPCmath — [INFO] [INFO] — exec-maven-plugin:1.1:exec (package-urcap) @ XMLRPCmath — [INFO] [INFO] — maven-install-plugin:2.5.2:install (default-install) @ XMLRPCmath — [INFO] Installing /home/einfisch/Downloads/com.ur.urcap.sample.XMLRPCmath/target/XMLRPCmath-1.0-SNAPSHOT.jar to /home/einfisch/.m2/repository/com/ur/urcap/sample/XMLRPCmath/1.0-SNAPSHOT/XMLRPCmath-1.0-SNAPSHOT.jar [INFO] Installing /home/einfisch/Downloads/com.ur.urcap.sample.XMLRPCmath/pom.xml to /home/einfisch/.m2/repository/com/ur/urcap/sample/XMLRPCmath/1.0-SNAPSHOT/XMLRPCmath-1.0-SNAPSHOT.pom [INFO] [INFO] — maven-bundle-plugin:2.4.0:install (default-install) @ XMLRPCmath — [INFO] Installing com/ur/urcap/sample/XMLRPCmath/1.0-SNAPSHOT/XMLRPCmath-1.0-SNAPSHOT.jar [INFO] Writing OBR metadata [INFO] [INFO] — exec-maven-plugin:1.1:exec (ursim-install-urcap) @ XMLRPCmath — [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 2.584 s [INFO] Finished at: 2018-05-15T16:28:30+02:00 [INFO] Final Memory: 15M/198M [INFO] ------------------------------------------------------------------------ **Running URSim with commando line $ ./start-ursim.sh** URControl(21138): Operation not permitted URControl: no process found ~/ursim/GUI ~/ursim ~/ursim Installing bundle: cglib-nodep-2.2.jar Installing bundle: commons-codec-1.9.jar Installing bundle: aopalliance-1.0.jar Installing bundle: balloontip-1.2.4.jar Installing bundle: view-1.3.307.jar Installing bundle: lambdaj-2.3.3.jar Installing bundle: validation-api-1.1.0.Final.jar Installing bundle: xstream-1.3.1.jar Installing bundle: program-1.3.307.jar Installing bundle: jgoodies-common-1.7.0.jar Installing bundle: g3-1.3.307.jar Installing bundle: commons-beanutils-1.8.3.jar Installing bundle: filters-2.0.235.jar Installing bundle: calibration-1.3.307.jar Installing bundle: api-1.2.56.jar Installing bundle: conveyortracking-1.2.9.jar Installing bundle: jackson-databind-2.0.0.jar Installing bundle: monitor-1.3.307.jar Installing bundle: guice-multibindings-3.0.jar Installing bundle: org.apache.felix.shell-1.4.3.jar Installing bundle: rxjava-2.1.0.jar Installing bundle: xmlrpc-common-3.1.3.0.jar Installing bundle: profinet-1.1.6.jar Installing bundle: defaultprogram-1.3.307.jar Installing bundle: io-1.3.307.jar Installing bundle: help-g3-UR5-1.2.79.jar Installing bundle: commons-collections-3.2.1.jar Installing bundle: ethernetip-1.1.10.jar Installing bundle: polyscope-lang-1.1.7.jar Installing bundle: xmlrpc-client-3.1.3.0.jar Installing bundle: dashboardserver-1.3.307.jar Installing bundle: jcl-core-2.5.jar Installing bundle: jsr305-3.0.1.jar Installing bundle: safety-1.3.307.jar Installing bundle: vecmath-1.5.2-modified.jar Installing bundle: jackson-annotations-2.0.0.jar Installing bundle: constants-3.0.0.jar Installing bundle: swing-worker-1.1.jar Installing bundle: commons-io-2.4.jar Installing bundle: objenesis-1.1.jar Installing bundle: hamcrest-all-1.1.jar Installing bundle: rxjava-1.3.0.jar Installing bundle: gson-2.5.jar Installing bundle: ws-commons-util-1.0.2.0.jar Installing bundle: jsoup-1.7.3.jar Installing bundle: commons-lang3-3.3.2.jar Installing bundle: commons-logging-1.2.jar Installing bundle: javahelp-2.0.05.jar Installing bundle: domain-1.3.307.jar Installing bundle: freehep-java3d-2.1.jar Installing bundle: security-1.3.307.jar Installing bundle: xpp3\_min-1.1.4c.jar Installing bundle: aspectjrt-1.8.2.jar Installing bundle: jemmy-3.2.1.jar Installing bundle: logging-1.3.307.jar Installing bundle: swing-layout-1.0.3.jar Installing bundle: commons-httpclient-3.1.0.0.jar Installing bundle: urscript2pojo-1.0.12.jar Installing bundle: j3d-core-utils-1.5.2-modified.jar Installing bundle: org.apache.felix.shell.remote-1.1.2.jar Installing bundle: swingx-1.6.1.jar Installing bundle: javax.inject-1.jar Installing bundle: jackson-core-2.0.0.jar Installing bundle: commons-math3-3.3.jar Installing bundle: guice-3.0.jar Installing bundle: boot-g3-1.3.307.jar Installing bundle: flightrecorder-1.3.307.jar Installing bundle: reactive-streams-1.0.0.jar Installing bundle: org.osgi.core-6.0.0.jar Installing bundle: org.apache.felix.bundlerepository-1.6.0.jar Installing bundle: polyscope-swing-1.1.1.jar Installing bundle: jgoodies-forms-1.7.2.jar Installing bundle: cssparser-0.9.14.jar Installing bundle: urcap-1.3.307.jar Installing bundle: commons-lang-2.6.jar Installing bundle: j3d-core-1.5.2-modified.jar Installing bundle: core-2.3.0.jar Installing bundle: sac-1.3.jar Installing bundle: org.apache.felix.fileinstall-3.5.0.jar Installing bundle: awtextra-1.0.jar Starting bundle: com.ur.polyscope.program [14] Starting bundle: com.ur.polyscope.g3 [16] Starting bundle: com.ur.polyscope.calibration [19] Starting bundle: com.ur.urcap.api [20] Starting bundle: com.ur.urcap.conveyortracking [21] Starting bundle: com.ur.polyscope.monitor [23] Starting bundle: com.ur.urcap.profinet [27] Starting bundle: com.ur.polyscope.defaultprogram [28] Starting bundle: [com.ur.polyscope.io](http://com.ur.polyscope.io) [29] Starting bundle: com.ur.polyscope.help-g3-UR5 [30] Starting bundle: com.ur.urcap.ethernetip [32] Starting bundle: com.ur.polyscope.lang [33] Starting bundle: com.ur.polyscope.dashboardserver [35] Starting bundle: com.ur.polyscope.safety [39] Starting bundle: com.ur.polyscope.constants [42] Starting bundle: com.ur.polyscope.domain [55] Starting bundle: com.ur.polyscope.security [57] Starting bundle: com.ur.logging [61] Starting bundle: com.ur.urscript2pojo [64] Starting bundle: com.ur.polyscope.flightrecorder [71] Starting bundle: com.ur.polyscope.swing [74] Starting bundle: com.ur.polyscope.urcap [77] Starting bundle: com.ur.polyscope.view [85] ERROR [Thread-2] 17:52:45 15/05/18: Problem with installation of bundle java.io.IOException: Could not set executable flag on file /home/einfisch/ursim/GUI/felix-cache/bundle107/data/com/ur/urcap/examples/mydaemon/impl/daemon/-61841394/run at com.ur.urcap.servicedaemon.impl.RUNITService.createExecutableFile(RUNITService.java:102) at com.ur.urcap.servicedaemon.impl.RUNITService.prepareDaemon(RUNITService.java:30) at com.ur.urcap.servicedaemon.impl.DaemonServiceManager.discoverInstalledDaemons(DaemonServiceManager.java:41) at com.ur.urcap.impl.osgi.OSGiURCapBundleProvider.registerServiceDaemons(OSGiURCapBundleProvider.java:135) at com.ur.urcap.impl.osgi.OSGiURCapBundleProvider.updateContributions(OSGiURCapBundleProvider.java:82) at com.ur.urcap.impl.osgi.OSGiURCapBundleProvider.getInstallationContributions(OSGiURCapBundleProvider.java:141) at com.ur.view.polyscope.module.urcaps.URCapInstallationModule.updateInstalledURCaps(URCapInstallationModule.java:124) at com.ur.view.polyscope.module.urcaps.URCapInstallationModule.unmarshal(URCapInstallationModule.java:108) at com.ur.view.polyscope.module.InstallationsContributionsProviderImpl.unmarshal(InstallationsContributionsProviderImpl.java:87) at com.ur.view.polyscope.persistence.installation.RobotInstallationConverterStrategy\_v3\_1.unmarshalInstallation(RobotInstallationConverterStrategy\_v3\_1.java:138) at com.ur.view.polyscope.persistence.installation.RobotInstallationConverterStrategy\_v3\_1.unmarshal(RobotInstallationConverterStrategy\_v3\_1.java:114) at com.ur.view.polyscope.persistence.installation.RobotInstallationConverterStrategy\_v3\_1.unmarshal(RobotInstallationConverterStrategy\_v3\_1.java:1) at com.ur.view.polyscope.persistence.CompositeConversionStrategy.tryUnmarshal(CompositeConversionStrategy.java:80) at com.ur.view.polyscope.persistence.CompositeConversionStrategy.unmarshal(CompositeConversionStrategy.java:47) at com.ur.view.polyscope.persistence.ConverterWrapper.unmarshal(ConverterWrapper.java:34) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:60) May 15, 2018 5:52:45 PM com.steadystate.css.parser.CSSOMParser WARNING: java.lang.ClassNotFoundException: com.steadystate.css.parser.SACParserCSS21 not found by org.w3c.css.sac [81] May 15, 2018 5:52:45 PM com.steadystate.css.parser.CSSOMParser WARNING: using the default ‘SACParserCSS21’ instead Could not set the title in the daemon process. URControl(21138): Operation not permitted URControl: no process found ERROR [RobotState - PostMan] 17:52:58 15/05/18 RobotState$PostMan.work(line:257): RobotState messages are queued up: 4 Thanks for help!!! ---
**Author:** ![anon42905246](https://avatars.discourse-cdn.com/v4/letter/a/e9a140/32.png) [@anon42905246](https://forum.universal-robots.com/u/anon42905246)\ **Post date:** [May 15, 2018, 6:32pm UTC](https://forum.universal-robots.com/t/mydaemon-example-in-installation-node-always-shows-my-daemon-failed/1986/2 "2018-05-15T18:32:39Z")
Hey, looks like maven output comes from another sample called XMLRPCmath. If you start ursim without parameter, I think it will start UR3, so keep that in mind. ---
**Author:** ![anon48814700](https://avatars.discourse-cdn.com/v4/letter/a/aeb1de/32.png) [@anon48814700](https://forum.universal-robots.com/u/anon48814700)\ **Post date:** [May 16, 2018, 8:45am UTC](https://forum.universal-robots.com/t/mydaemon-example-in-installation-node-always-shows-my-daemon-failed/1986/3 "2018-05-16T08:45:12Z")
Oops, sorry. Yes I was also working on the XMLRPCmath example, which uses daemon as well. The build succeded but also doesn’t work on URSim. I think it may be the same problem as daemon program. ---
**Author:** ![anon42905246](https://avatars.discourse-cdn.com/v4/letter/a/e9a140/32.png) [@anon42905246](https://forum.universal-robots.com/u/anon42905246)\ **Post date:** [May 16, 2018, 9:23am UTC](https://forum.universal-robots.com/t/mydaemon-example-in-installation-node-always-shows-my-daemon-failed/1986/4 "2018-05-16T09:23:11Z")
I have two ideas: > [@anon48814700](#): > > ERROR [Thread-2] 17:52:45 15/05/18: Problem with installation of bundle > java.io.IOException: Could not set executable flag on file /home/einfisch/ursim/GUI/felix-cache/bundle107/data/com/ur/urcap/examples/mydaemon/impl/daemon/-61841394/run Did you set your daemon script file to be executable? Try python daemon first. I never tried to start c++. > [@anon48814700](#): > > May 15, 2018 5:52:45 PM com.steadystate.css.parser.CSSOMParser > WARNING: java.lang.ClassNotFoundException: com.steadystate.css.parser.SACParserCSS21 not found by org.w3c.css.sac [81] Are you using any funny css or html in Installation node or Program Node? Polyscope is very vulnerable to that and defaults to crashing rather than ignoring unknown html/css. ---
**Author:** ![anon48814700](https://avatars.discourse-cdn.com/v4/letter/a/aeb1de/32.png) [@anon48814700](https://forum.universal-robots.com/u/anon48814700)\ **Post date:** [May 16, 2018, 12:31pm UTC](https://forum.universal-robots.com/t/mydaemon-example-in-installation-node-always-shows-my-daemon-failed/1986/5 "2018-05-16T12:31:10Z")
Yes I’ve tried python, everthing is fine until I open the installation interface and it shows my daemon failed. Actually I just follow the Tutorial and didn’t change css or html data… ---
**Author:** ![anon42905246](https://avatars.discourse-cdn.com/v4/letter/a/e9a140/32.png) [@anon42905246](https://forum.universal-robots.com/u/anon42905246)\ **Post date:** [May 17, 2018, 5:03am UTC](https://forum.universal-robots.com/t/mydaemon-example-in-installation-node-always-shows-my-daemon-failed/1986/6 "2018-05-17T05:03:33Z")
Ok, actually you can ignore that `java.lang.ClassNotFoundException` from `com.steadystaet.css.parser`. I have it also when I start Polyscope. Could you show result of `ls -l` in the directory where you have your python daemon script? ---
**Author:** ![anon48814700](https://avatars.discourse-cdn.com/v4/letter/a/aeb1de/32.png) [@anon48814700](https://forum.universal-robots.com/u/anon48814700)\ **Post date:** [July 6, 2018, 8:21am UTC](https://forum.universal-robots.com/t/mydaemon-example-in-installation-node-always-shows-my-daemon-failed/1986/7 "2018-07-06T08:21:35Z")
Hi, I think I have found the problem. Somehow the python server(hello-world.py) is not started in Polyscope. That’s why in user interface of installation node it always shows my daemon failed. Man can start the server in commando line. ---
**Author:** ![anon48814700](https://avatars.discourse-cdn.com/v4/letter/a/aeb1de/32.png) [@anon48814700](https://forum.universal-robots.com/u/anon48814700)\ **Post date:** [July 6, 2018, 8:22am UTC](https://forum.universal-robots.com/t/mydaemon-example-in-installation-node-always-shows-my-daemon-failed/1986/8 "2018-07-06T08:22:00Z")
Thank you very much still!