Qt does not use exceptions, in general.

I ran through the dialogs several times now, no crashes. However, the technical problem one could see with modal dialogs are the nested event loops they create.

If you can reproduce the crash on your box then I would recommend using native-gdb (in your sbox' x86 target), or valgrind.

Does MADDE not allow you to properly debug your application?

(Also, "bool *someVar = new bool" is not a good idea - how do you guarantee that your delete statement is ever reached? It's generally better to allocate local variables on the stack, and if a method requires a pointer you can use the address operator on your variable instead.)