"Unexpected failure detected: ServerException" when trying to sync.

That said I had to struggle hard to get rid of the existing 7.0
installation. When trying to uninstall (before installing 7.0.1 the
installer crashed, leaving me with a product that was half uninstalled. This
obstructed the install of 7.0.1 and I had to delete any refs. to Pylon in
the windows registry.

Any ideas?