Could you open a terminal (cmd.exe) and run `\path\to\geany\bin\geany.exe --verbose`? This should start Geany with another terminal window opening, hopefully you can see anything useful in there before it crashes.
Also, try to disable all plugins (either by editing geany.conf directly or by renaming the plugins folder in the installation path).
In 1.30 there were no relevant changes as far as I remember which could cause the crash. So I assume it could be caused some GTK or other dependency library update.