I just installed ag_UnitFrames today, along with the latest versions of oRA2 and sRaidFrames (although sRaidFrames was disabled since I was on my rogue and didnt really need them). While raiding with my guild I had an annoying problem where whenever I clicked on the MT windows I got an error that ag_UnitFrames had tried to access part of the Blizzard UI and did I want to disable or ignore. It also would not pick up the target. I thought perhaps it is more likely to be a oRA2 problem and just misreported by Blizzard, but figured I should post it here as well.
When I click on MT, or MT target I get blizzard error about blocking this action only alloved to Blizzard UI. Disable, Ignore ... :(
I am having this exact same problem if I try to click on the MT frames. I am using oRA2 and ag_UnitFrames. sRaidFrames is installed but disabled because as a rogue I don't really need them. All of them are the latest versions afaik. The error says that ag_UnitFrames is causing it, but since the Blizzard error message can sometimes misreport addons, it seems much more likely it is an ora2 error. I don't see what my unitframes could be doing to cause it, but I will be posting this problem on its thread as well.
I hope it is compatible soon :( I've been trying to download my 2.0 mods early to avoid the rush on patchday. I use oRA2 as my CTRA alternative and I love it. As I'm in a raiding guild where CTRA/oRA2 is required, if there isn't a version up by patch day I'll need to go back to CTRA ;_;