In wxFormBuilder v3.5 - beta
When having a wxTextCtrl with flag wxTE_RICH or wxTE_RICH2 set under object properties style, an 'wxFormBuilder Error' dialog with message 'ObjectBase is NULL! <C: ...="" wxFormBuilder="" src="" rad="" wxfbmanager.cpp,167="">' pops up.
Without the flags set, everything is ok.
I also could track down this problem:
This error message occurs, when I change the font setting within the Object Properties of the wxTextCtrl.
Unfortunately, I can't go back to the default setting within the wxFB GUI.
Deleting the string in font: doesn't help.
If one setting of the font is changed, the error message occur.
The only way then to get rid of the message is editing the fbp file directly, and delete
everything in font property (<property name="font"></property>).
Tested on Win 7.
Robert