Whenever I use my Mask Feather Tool AfterFX.exe will freeze. Sometimes manipulating the feather works like thirty seconds before freeze, other times the application will freeze almost instantly. The feature is at this point practically useless.
I'm running a BOXX-W8920 workstation.
Windows7 Professional x64 - SP1
Nvidia Quadro 4000 (driver version 306.94 (yes the driver is outdated))
I can't tell what causes this freeze to happen, besides it has something to do with the Mask Feather Tool.
This behaviour does not occur on other workstations, but they all run After Effects on Mac so no comparison can be made there really...
I'll update the GPU driver, but beyond that I would be happy if anyone can help me resolve this one.
Edit: Latest GPU drivers didn't help a bit.
I too suffered from this error after I upgraded my workstation to HP820z/nvidia gtx690 (driver 311.06)/win7 64. I should note my previous setup did not have this problem (dual xeon/nvidia quadro 1700.) Mask feathering was either excruciatingly slow or would outright crash the software under CS6. I believe (unfortunately for you) that the 11.0.2 update fixed it (it's still slow, though). Once I upgraded to CC, however, the problem seems to have gone away...although pushing feathered mask points seems still slower than it should be.
Not much of a help, I know - but letting you know you're not alone