I am trying to track a layer using stabilize motion. When I stop the process with space bar or a click, I get this error message and AE quits out.
Stopping the creation of RAM preview in other instances has led to crashes as well, but without this dialog box.
10.10.3 OSX with latest version AE. I installed this latest AE update because I was having the "RAM Preview won't stop" problem...now it seems it is the "RAM Preview crash" problem. This is entirely repeatable and I can reproduce it to Adobe engineers if necessary.
Mac OSX 10.10.4 included some fixes from Apple that help with several issues, so I recommend updating to the current OS.