We're in the process of ugprading to 1.2, but I'm fairly certain this is not a Filr back-end code issue.

Some of our Windows 7 (Enterprise 32-bit) can use Windows Explorer to map a drive to Filr via WebDav:

They get the prompt to enter userid/password and voila.

Others don't work and get an error (not even a login prompt):

The mapped network drive could not be created because the following error has occurred:
The process cannot access the file because another process has locked a portion of the file.

Anyone seen this before?