It had been quite a while since I used it, but when when I tried, I got the error:
wxformbuilder: relocation error: wxformbuilder: symbol _Z23wxHandleFatalExceptionsb, version WXU_2.8 not defined in file libwx_baseu-2.8.so.0 with link time reference
I tried reinstalling it - same error. I also did a complete removal and install. Same error. The package appears to be broken.