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 Numb…

[image] How to prevent renaming variables when using Subprog? General Application Help: How do I? Hello, How can I prevent Polyscope from asking me to rename variables when using “Subprog”? Some context: I made a program which I use for machine tending. It runs well, on…

I use palletizing in sub programs. I have gotten that same error along with other issues doing so, but the workaround for me was to uncheck the “Save sub with this file” box in the sub prog, open sub, then open back up the main program. Hope this helps somebody out.

Hello, I had the same problem. I solved it by creating installation variables in Installation → Variables. By replacing these variables both in the main program and in the subprogram, the warning no longer appears.

Palletizing in subprograms causes null pointers

Technical Questions Report a Bug

eric.feldmann March 24, 2026, 1:35pm 5

Another report years later: NullPointerException Error

Topic		Replies	Views
Null Pointer exception when saving the program Report a Bug	15	611	January 20, 2025
NullPointerException Error General Application Help: How do I?	2	96	April 2, 2026
Palletizing subprogram gives error when clicked on 'Keep subprogram updated' Report a Bug palletizing	2	1155	September 1, 2022
Palletizing in Subroutine - NullPointerException Report a Bug	1	660	December 5, 2022
Error message in palletizing wizard after opening a new program Report a Bug	3	1113	June 6, 2023

Palletizing in subprograms causes null pointers

Related topics