Dynamic Logo appears as a blank square?

SSRS 2014,

I have a two logo objects located in the header of my report, one is static(embedded) and the other is external (dynamic). I use an expression to return the correct external logo image based upon the parameter selected by the user. It was working on both the server and in designer until I had to move both the image folder and the project to another location that has a daily backup plan. Now I get either the image with the little red X or an empty box. I've tried multiple possibilities, even reverting to the original config but it only works in Designer. I checked the permissions on the folder, it's consistent with the previous folder. Any suggestions or thoughts?

Thanks in advance.

In Reporting Services Configuration Manager select Execution Account.
Check the Specify an Execution Account and add an domain\username with password that has permission to use the network file.