What version of Premiere Elements and what computer operation system?
What are you doing in the program when you appear to get this message about
"user does not have sufficient privileges to write in destination folder"?
What is the destination folder? Have you looked at the permissions for this destination folder? If so, what are they?
Are you running the program as administrator (from a user account with administrative privileges). In addition, have you right clicked the Premiere Elements desktop icon and selected and applied Run As Administrator.
Please consider, and supply details to help us to help you.
Any questions about the questions above, please do not hesitate to ask.