# NullPointerException Error

**URL:** <https://forum.universal-robots.com/t/nullpointerexception-error/42495>\
**Category:** General Application Help: How do I?\
**Created:** [March 23, 2026, 7:53pm UTC](https://forum.universal-robots.com/t/nullpointerexception-error/42495 "2026-03-23T19:53:37Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![eric.feldmann](https://avatars.discourse-cdn.com/v4/letter/e/94ad74/32.png) [@eric.feldmann](https://forum.universal-robots.com/u/eric.feldmann)\
**Post date:** [March 24, 2026, 1:32pm UTC](https://forum.universal-robots.com/t/nullpointerexception-error/42495/2 "2026-03-24T13:32:58Z")

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> [@Palletizing in subprograms causes null pointers](https://forum.universal-robots.com/t/palletizing-in-subprograms-causes-null-pointers/30553):
>
> Steps to reproduce: Create a program with a Palletizing node. Put it in a subprogram. Reload the program. Get Nullpointers. Expected Behavior: Normal operation Actual Behavior: Palletizing node throws null pointers Workaround Suggestion: Can’t use Palletizing in subprograms Robot Serial Number: Various Affected Version(s): Unclear I’ve not personally had this problem, I’ve just seen it reported numerous times here on the forum with no response from UR. Please investigate this. @jbm …

I’ll add you to the list of people I’ve seen report this. It’s been years and the issue hasn’t been fixed. With UR’s push for Polyscope X, I doubt you’ll see a solution to this.

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