emm1, all Server 2 Beta and RC customers used a the same two serial numbers.  You will need to use a new serial number for Server 2 GA release- you should have been prompted to specify the number of serial numbers/license keys that you want when you downloaded the GA version.  You should have been provided 2 licenses/keys - one for Linux hosts and one for Windows hosts.  Make sure you are cut and pasting the correct one.    If you are unsure, head back to

https://www.vmware.com/freedownload/login.php?product=server20

and use the same email address that you used to register to originally download Server 2.0 GA.  It should list out the  serial numbers/license keys that were provided to you.

I installed GA over RC2, and the install did not ask for a new serial.  Will I have a problem if I do not install the new serial, if so, how do I do it?

You can also reenter the serial number using via VI Web Access  -> Application -> Enter Serial Number

As part of the download, you should have been provisioned new serial numbers for Server 2.0 GA.  Probably best to use these assigned serial numbers - we did not change the backend engine provisioning our license keys for Server (1 and 2) but I am not sure where the Beta/RC serial numbers originated from. You can reenter serial number via Web Access/Application.

Thanks

People here seem to be missing this point.....

The pattern -

VI Web Access -> Application -> Enter Serial Number

DOES NOT WORK  if you have left an older SN in the registry.

This is a bug and needs to be addressed.

For those who have hit this error -

InvalidLicense: The uploaded license content was not valid.

has anyone found completely uninstalling and reinstalling to solve the problem?

All, it looks like something broke along the way...Thanks for finding this.  I was able to reproduce this in-house.