Hi Leo,
For clarity.
The Workstation 9 license is not used by the Technical Preview.
The preview software needs its own license as it is in effect the next version of VMware Workstation (hence the "preview" bit)
The license needed is the license on the preview page that I pointed you towards.
If you hadn't entered the license from the preview page before in your last technical preview install and not entering it now then it is expected that you end up with a 30 day evaluation license.
The Workstation 9 license is preserved, but will only be used if you install the Workstation 9 software again.
Hope this helps,
--
Wil