[Lazarus] r21114 - "Invalid type cast" when opening dialog in IDE

[Vincent Snijders]

Graeme Geldenhuys schreef:
> I upgraded this morning to test something Vincent tried to fix. I now 
> notice that you cannot open the "Project > Compiler Options" dialog 
> anymore. It gives a "Invalid type cast" error.

It is gtk2 specific. Revision 21115 contains a temporary fix. Revision 21116 
contains a proper fix, which seems to work ok.

Vincent