OSX errors: frustrating I might not be able to claim 10.9 support yet. I think I have to limit it (and bug bounties) to 10.8.
The print issue predates Mavericks, I can replicate it on 10.8 in both the latest stable and the latest beta.
I completely understand your reluctance to support 10.9, it's foreign territory especially as you're not a native developer.
Oh, that's right... I do remember having to do some special stuff on OSX with the print dialog. But I seem to remember that it was fixed with the OSX-specific code... I guess not?