Run program fails after editing

When I open saved project and run all actions it works fine. If I decide to re-save “run program” action with a different parameter, it fails.

image

After saving, closing, and re-opening easymorph project, it starts working again.
Is this a bug?
Version 4.4.0.7

Doesn’t look right to me.

We couldn’t reproduce the problem. Can you please send the project to our support email? Thanks