I know what you mean. It was the second most anoying thing about the ple. Right after the watermarks being all over the work area all the time.
Being unable to transfer files to a licensed version I can somehow understand. Even though it is slightly annoying if you are student and your tutors expect you to do work at home.
But what I really cannot understand is why does alias make it impossible to transfer files from a licensed version to a ple. That means as a student you can't even make tryouts at home and play with your collegework. Do they really think every student has 300 bucks to by a student license???