It was supposed to start....I've been using the Duik plug-in,
We seriously can't know. This error is elusive, to say the least. Here's my original blurb:
Beyond that we would need much more info like the structure of your project, footage used, where you apply DUIK, system info, your version of AE etc.. Presumably it's an issue with the expressions the plug-in creates that respond to your controller scaling in undesirable ways because they are not "hardened" properly, but we can't know that.
It's a super simple Photoshop rig with split-limbs, head, neck, body and pelvis. I'm running CS6 at home, the project/composition is identical to when I open it up at work (also CS6) where it works fine. My system is a Mavericks clover boot with a NVIDIA GTX660, I've just assigned the AE file so it can use the GPU in preferences but still nothing. At work, it all runs fine off the CPU......grrrrr.