Invalid File Path Specified error in User Rank Manager

[ViciousGnome]

Hello, and thank you for trying to assist me.

I am using vBulletin 5.0.3, and it's installed at www.mydomain.com/forums

When using the User Rank Manager in the Admin CP to add an image for a new specified rank, no matter what I enter into the User Rank File Path, I get the following error:

Invalid File Path Specified

The image I am trying to enter is founding_gold.gif, and it has been uploaded into the forums/images directory as well as the forums/core/images/ranks directory. When I try to enter the full url path, the text of the url shows up in the user profile, not the image. Can someone please tell me what I am doing incorrectly? Thank you again for trying to assist me.