Let us get the basics out of the way first....
a. Are you running Premiere Elements 9.0/9.0.1 and 10 on Windows? If so, what edition as well as 32 or 64 bit?
b. Do you have the latest version of QuickTime installed on your computer with these Premiere Elements programs?
c. Are you running these programs as Run As Administrator or from a User Account with Administrative Priviledges?
d. Any history of problems with your Internet connect and your YouTube account User ID and Password? How far do you get in the
upload to YouTube process when it fails...authentication, uploading, processing at YouTube, other?
e. What is the size of the upload as well as the duration?
f. Can you export your Timeline to a file saved to the computer hard drive and then upload that file to YouTube at the YouTube web site?
g. Any error messages associated with the failure to upload?
Also, could you elaborate on "approved categories" when your wrote
Still cannot upload video to Yoju Tube despite using one of the approved categories
Let us start here and see where your answers lead us.