Hi
In our experience this is due to the Password entry in the dbid.xml file.
Thats why it is imperative that once you create your new environment that you create a blank Project and then always copy the whole dbid.xml file from this Project to all your old projects and only change the fields as mentioned. If you cut and paste just vertain lines ( like the password line ) it will not work. Remember you can copy the Project ID from your old file if you want to ( or just change one of the characters )
Hope this helps
Thanks
Martin
NOTE : The views expressed here are entirely my own