Proxy server?? problems

Having a problem connecting 1 of 2 REB1200's to my content.I use an XP box - service pack 2 - as a proxy server and RebLibrarian v2.27 to upload content to the 1200's.

About a week ago both stopped working with the Librarian program. When connected, they wouldn't see any content on the bookshelf. I have since re-installed the librarian program and got the 1'st 1200 connecting and downloading content again.

The 2nd 1200 will connect to the bookshelf, and correctly displays all content. When I attempt to download any of my own content to the 2nd 1200 though, it gives the same error every time...

"There was no response from the server; trying the operation again may help."

I am able to download the "GNU Wget Manual" that installs with the librarian program to the 2nd 1200, not sure why only this file.

I have double-checked that my content is .IMP format. I have also checked the IP address of the proxy server and the 1200, as well as the port both listen on. Everything is the same as the 1st REB1200.

I assigned a new IP address to the second 1200 and still received the same error.

I copied all content between both bookshelves in attempt to make both connect to one bookshelf or the other.

Any other suggestions I can try to get the second unit downloading my own files from the bookshelf again?