SQL Server - An error occurred while executing batch. Error message is: The directory name is invalid

Question

Our database server had run out of disk space, after freeing up some disk space any query run in sql server management studio, with the results sent to grid view, resulted i

Answer 1

I had this issue on my webserver (windows server r2 running SQL Server 2012)

The directory name is invalid.
(mscore lib)

Logging out (killing my remote session) and logging back in fixed the issue for me.