I keep on getting this "The activation of AAC (MC) failed. If you are using the program as a guest, please repeat the activation procedure with administrator rights." it only happens when I try to drop or import any video type into vegas pro 18. but for some reason, MKV is able to be dropped since I enabled it in the file I/O.
You were advised in your previous post that this is NOT the forum for Magix Vegas products. A reply to that post pointed you to the correct forums. Please follow that link and repost your question to those forums.