Lost Presets?

I recently updated Cubase 5 to the latest version and have lost practically ALL of my presets. Everything from the initial studio set-up to the synth presets…everything is gone.
Any suggestions on this one? I suddenly can’t even export my midi tracks (that used the bundled synths).
If anyone else has had this problem and was able to resolve it, please let me know.
Thanks.


Platform: Win7 ultimate

There’s a Knowledge Base Article that will explain what to do.