Click any icon in Citect Studio Generated OutOfMemory exception.

I believe I encountered this once when I had a corrupt dbf file in my project.
You might want to check the file(s) that you were trying to edit, like variable.dbf or equip.dbf. Also check the included projects if you use them.
You could also try to remove your current project(s) from the master.dbf file and restart Citect Studio so you can exclude that project from being the issue.

Thanks Patrick, I will try this. This is happening, if you click any ICON/Menu is studio. Was the case with you?

Yes it happened when switching to almost all tabs / menus in Studio. In my case it turned out that my equip.dbf had a non-character field due to editing in a third-party tool.