Problem is that when i try to change internal soundcard to external soundcard, after effects is crashing, and won't open again before i go to os/c (harddrive) -->users-->user-->appdata-->roaming-->Adobe--> And rename after effects folder. My external soundcard is steinberg CI-1. It's have been doing ok before, but suddenly stopped working.
Does it use a specific driver? If so, it probably needs to be updated/ un-updated/ reinstalled/ whatever. Also, if it is ASIO compatible or any of that, another program may have changed that configuration and stored it somewhere....