Trying to uninstall or repair sql server express 2008 - I get the following error: The Given key was not present in the dictionary

Trying to uninstall or repair sql server express 2008 - I get the following error: The Given key was not present in the dictionary.  i have tried many things, reinstalling, etc, but nothing works.  i have a working version of 2008 express R2, but i want to remove the 2008 express.  any help would be appreciated.  i have pasted the contents of one of the logs below.
Overall summary   Final result:                  Failed: see details below   Exit code (Decimal):           -71883602   Exit facility code:            951   Exit error code:               9390   Exit message:            &nbs ...