Looks like you are making great progress.

I created a new project thus:
Project Options
Project output - Output creates a wxDialog
Code options - Generate XRC code (both radios checked)
Projectname: R1
Output path : c:\Projects\wx\rapid\r1
Author: theWolf
Selected "File|generate code"
CRASH

(Rapid created another folder under the one I had wanted
"c:\Projects\wx\rapid\r1\r1" - the errors reported before the program exited were; a general protection fault, and could not find the path to the header file r1.h)
I tried another attempt where I saved the project before selecting "File|generate code" - result was a single error: can't find path but no general protection fault. The program exited here too.
I hope this feedback helps.

Best regards.