At what point did you reboot the machine? Is this after installing the Framework package, or after the Full Disk component?
If the former, then the machine is not yet encrypted and you should be able to read it fine. If this only failed after the Full Disk component was installed, then it may already be partially encrypted. In which case you can see what's on the disk and copy stuff off by booting to the SEE Access CD (image included in the server media), before attempting to force decryption using the Recovery CD (and image of which is also included in the server media).
Also, the below might help:
http://www.symantec.com/docs/TECH134766