Is your polish version an official version created by Filemaker or some hack from a 3rd party localization company ?
Anyway, I bet you get the same crash in any instruction that has a gear wheel you can click on...
Try googling for an exception of type System.Windows,Markup.XamlParseException occured in PresentationFramework.dll
I have official version from WindSoft :: source
Crashes only Set Variable, other gear wheel working ok ...
Od: Sales WinSoft <firstname.lastname@example.org>
Temat: Odp: Your order n° 30239751 - WinSoft Online Shop by WinSoft
Data: 18 grudnia 2015 17:33:45 CET
Dear Marek Sieczak,
We are sorry for the inconvenience caused. Please find below the second license key:
We hope you will your software and we remain at your disposal for any further question you may have.
obscure immediately your fmpa license code please
tell me why, please.
This licence dosn''t work ... sorry, it is true.
I love FM but I need help