First, I got the wonderful error dialog:
The “ActionScript 3” bundle located in ~/Library/Application Support/TextMate/Bundles could not be loaded and will be skipped. The contained info.plist appears to be corrupt or missing.
What's going on here? No idea. So I looked at the plist file in question and found what looked like a half failed diff at the bottom:
This <http://macromates.com/svn/Bundles/trunk/Review/Bundles/ActionScript%203.tmbu...
is currently clean.
So I'd say you created all the conflicts when you ran your update script as your working copy contained changes that subversion could not automatically merge.
Try the "Build (custom)" option, it tells me the script is not executable. Joy. So I run the supplied compile.sh script manually by opening the script and pressing Apple-R to run it. TM alerts me that the script is not executable, so I make it so. OK, so now it runs.
This script is provided as a template to be customised before being used, as a result it's left un-executable, and as you point out the command warns you of this.
[...] Turns out that the default file supplied by Adobe is also in DOS encoding (funny line endings). [...]
I use the Flex SDK versions 2, 3 and 4 and their minor revisions and I've not had this problem with any of them (running Leopard).
Cheers, Simon