I don't often use TuxGuitar and I just found out that it doesn't work on Mountain Lion (10.8). Any suggestions for free/cheap alternatives? I don't use apps like this all that often (It took me this long to find out it's broken), so I'm not looking to spend much, if I have to.
EDIT: I should clarify, I have viewers, I just wanted something to edit a tab that TuxGuitar can open and quickly "re-tab" it for a guitar in a different tuning and/or quickly transpose it up or down a few half-steps.
Worked-out a solution:
1) Delete the current install of TuxGuitar
2) Delete (using Terminal) ~/.tuxguitar-1.2
3) Manually download the latest 64-bit version from SourceForge
It looks like there was something wrong in my settings, and the version that's downloaded using the SourceForge green box is the wrong version.