[Henk V.d. munnik]

I have the same problem with the Mainconcept. It is a real faillure. I only use the Pro 11 Trial. (registered user of Pro 10)
If you use the new menu-item Upload to YouTube, you can use the standard quality. But if you want to use the higher quality the problem also occurs. So i assume tha Vegas use the Mainconcept for uploading to YouTube. There is work te be done for Sony. At this time i don’t upgrade to a program that give trouble while it is working fine in Pro 10.