I would encourage you to do
uninstall (usually Control Panel/Programs way)
free ccleaner run through (regular cleaner and registry cleaner parts)
Reinstall with antivirus and firewall(s) disabled
Before you do that I would ask that you go through a typical troubleshooting drill
a. Are you working from the 8.0.1 Update of the program?
b. Do you have the automatic Background Rendering and AutoAnalzyer features disabled?
c. Have you looked at the problem with and without the antivirus and firewall(s) disabled?
d. Do you have the latest version of QuickTime Installed on your computer with Premiere Elements?
e. Are you running the program from a User Account with Administrative Privileges?
When was the last time that the program worked without this issue? In other words, is this a
"it worked before but not now" or "it never worked before" issue.
Please review and consider and then we can decide what next.
Add On...Do not hesitate to ask questions or ask for clarification when doing any of the above.