Error Starting SQL Assistant v14.10.0.4

I cannot start SQL Assistant, and the error message is:

System.IO.DirectoryNotFoundException: Could not find special directory 'My Documents'.

I KNOW my My Documents folder is broken (was re-directed to a network share that is no longer available), but still need to be operational.
How can I "reset" SQL Assistant? or start it w/a different config, clean config, break it's need to find My Documents?

This seems pretty fragile...