I can confirm that 0.5.2 is indeed working OK. All 3 modes. Though I can't say that it was extensive testing.

Also, I tried 0.5.4 HD and it's working very smoothly, like non-HD version, almost without segfaults on all 3 modes. Almost - I had just one segfault when I once tried to quit to main menu from pause menu during zen game. The other times it was OK.

EDIT:
Screenshot from HD version.
Notice incorrect aspect ratio and some graphical glithes (sprites in front of fruit and bomb icon and incorrectly textured bomb icon).