"The directory name is invalid." MSSQL Management Studio

I got an error when trying to modify a stored procedure

Searched for proper solution and found one EXCELLENT solution

Error :
Title - Microsoft Management Studio 2005
"The directory name is invalid."
 (mscorlib)

Solution:
As usual, the only solution to most of the issues in windows : Restarted the machine and error resolved :)

By AlpesH Shah