What is the Duration of the Video, that you are attempting to Upload to YouTube, i.e. the Duration of the Timeline?
With a direct Upload, PrE has a lower limit on the Duration, than many YouTube accounts now allow. Back in PrE 9, it was even less, than it is now in PrE 12, which is still less that some accounts allow.
If the direct Upload is failing, have you tried to Share the Timeline, to the H.264 YouTube Preset, and then manually Upload that file to YouTube? That will also get past a Duration limit in PrE, though, depending on your YouTube account, you might still have a limit.
It is clear from your screenshot that the duration of your Timeline content is 8 minutes 32 seconds 15 frames well within the Premiere Elements 9.0/9.0.1 Share/Online/YouTube limit of 15 min 0.0 sec. In the YouTube bottom area what did it show for file size as well as duration of your specific project? The YouTube limit for file size is listed as 2.0 GB.
In version 9.0/9.0.1, I do not see that you have a given YouTube choice (H.264 YouTube Preset) under Share/Computer/MPEG and you do not have an AVCHD choice in your version as you do in more recent versions.)
Have you checked your Internet connection and Edit Menu/Preferences/Web Sharing?
Trying for the export of the Timeline to a file saved to the computer hard drive and then uploaded to YouTube at the YouTube web site would seem an appropriate next step troubleshooting. I would suggest for that
For a H.264.mp4 file
Mobile Phones and Players
Apple iPod and iPhone
iPod and iPhone High Quality
and then customizing the Export Settings under the Advanced Button/Video Tab of the preset.
If I knew your video properties I would suggest the appropriate customized Export Settings.
Please let us know if you need help with any of the settings or need clarification on anything written.
Thank you for the reply.
Did you try the export of your Timeline content to a file, followed by the upload of that file to YouTube at the YouTube web site? Did that fail also?
Do you have installation files or disc for Premere Elements 9? If so, do you want to consider an uninstall, ccleaner run through of the computer, reinstall?
We could also try deleting the settings file
Premiere Elements Folder
In the 9.0 Folder is the Adobe Premiere Elements Prefs file that you delete. If that does not work, then you delete the whole 9.0 Folder in which the Adobe Premiere Elements Prefs file exists. (If you try this, please follow the path exactly since there are opportunities to get detoured if you do not.)
Be sure to be working with Folder Option Show Hidden Files, Folders, and Drives active so that you can see the complete path.
When last we wrote, the above did not seem likely candidates to include in the troubleshooting, but it is worth giving them a try at this point.
Since you wrote that the upload to YouTube is working with Premiere Elements 9.0/9.0.1 on another computer, I would ask "What are the significant differences that you see in the two computers, one where the feature works and the one where the feature does not work?"
Looking forward to learning of your progress.
Thanks for the follow up. Sorry the news is not better.
Have you double checked to make sure that antivirus and firewalls are not factors in the issue? What antivirus program do you use? If McAfee, there have been recent problems with it and Premiere Elements? But, remind me, at this time, is the upload to YouTube the only issue that you are having with Premiere Elements 9.0/9.0.1 and the 12 tryout?
Please let us know how you do with your latest troubleshooting plan.
After that we will think about this some more.