I'm having a repeated crash when I go to add a new AI Package and click the IDLES>Use Specific Idles>Add new, and try to choose an actor to demonstrate the idle. It happens every time, crashing the CK, even though I make sure not to touch anything after hitting my selection. Has anyone had any luck with this feature?

I can't get into it either. I tried a couple of different ways. In my own plugin and in the Skyrim.esm and in a new package and in an existing one. Crashed out every time. I'm pretty sad about it. I use this a lot.

I was having problems with AI Packages as well but of a different nature. Basically, when I would use the Near Reference->Select Reference In Render Window option, the click Ok, CK would crash. So, in trying different ways to counter this bug, I used the In Cell option while NOT having anything loaded in the Render Window. This worked. So I know this isn't exactly about using idles, but it may provide a means to get around CK crashing when working with ai packages.