Path requirement for Polyspace 2017b

Hi,

I am trying to run Polyspace for my source code which is present in the path C:\Source_code. when i tried to run, it is throwing error:

Unexpected exception Path (Path)

Command line error: invalid directory parameter C:\\Source_code (argument of -I) is not valid.

But if i put my source code in a folder under C drive (C:\NewFolder\Source_code) then it is working fine.

Is there any path restriction or requirement.? Please help.

Thanks.

S A