May I know , if you are using a shared folder or you have a network drive mapped on your server ?
If its a network drive mapped, then pls use 'net use' command on command prompt to fetch the complete name for the drive.
I faced the same problem but when I fetched the name this way, it worked.
Please refer to my previous reply for steps.
Hope it helps.
🙂
Rgds,
ansz5