Hi Myles,

Hi all - I'm a textmate newbie and finding that I can't change font size using cmd + / cdm -.

That error message corresponds to "cmd =", which is "jump to next error" in the Xcode bundle. Hence the error message... If you want to bump font size you need to use "cmd +", which involves the shift key (ie, "cmd shift =", unlike in browsers etc, where leaving off the shift key has the same effect).

More generally, "control cmd t" is your friend: use that command, then select "Key equivalent" via the triangle next to the magnifying glass, and it displays the command corresponding to the keys that you press.

Cheers, Paul