problem uploading screenshot for in-app purchases

[KyleTomson]

I just submitted an application that has in-app purchases. Everything has been tested and works well. I am trying to developer approve the in-app purchases and I am getting stuck on the screenshot they want. I have screenshots that are of the proper size. I select the file, hit the upload button and then ...
Nothing happens. Screen just refreshes with the file I selected gone and the thumbnail NOT in the box for the screenshot. If I try to approve it, it says it is missing the screenshot. I have tried different sized files, different file types, but to no avail.

Anybody have this happen to them? How did you resolve it?

Thanks,

Kyle