ZBrushCentral

STL import option window appears when trying to use the regular import

Hello,
I am trying to write an import/remesh/export script. I currently have a script that does what I want - sometimes.
In the script, I use [IPress, Tool:Subtool:Delete] but when I first load the script, at this point a window for STL import pops up. When I click ok, another window pops up telling me there was an error (of course since i’m importing objs) now after this, when i load the script a second time, it works.
I have deleted the 3d printing plugin, since i found the possibility to import stls there but this changed nothing.

Can anyone help with this?