I installed using your deb-package. I've used it for a few days now and it doesn't crash as often, but it's still crashing from time to time. Haven't managed to pinpoint anything though.
Except I had to delete my old geany.conf - otherwise it would crash whenever I tried to enter the preferences.
Random events where it has crashed: - once upon typing an end-bracket } again - once when searching through a file - upon hitting F3 to "search again"/continue - a couple times when opening files. One of which might have been in use by another application.
:) ~Kris