Upgraded using the downloaded windows installer (64bit) completed without an error. Both Collabnet services are running but I get:
HTTP ERROR: 503 Problem accessing /csvn. Reason: Service Unavailable.
CSVN console reg entry seems to be pointing to the new Java path C:\csvn\jre\bin\java.exe
I'm guessing its a path or config file issue?
There is more information about this problem on the Collabnet forum. I resolved my issue by uninstalling subversion edge, delete everything in the c:\csvn folder EXCEPT the data folder then re install the application.