Cannot Select Documents in Production Environment

We have a client who is trying to use WMS Express in their production environment.  In the Test environment they were able to use the application without issue, but in the production environment they cannot select documents in any of the pages.  For example, the Picking page from the Test environment has a left-hand pane where they can “Close” and “Choose” documents (this is normal).  In the production environment the left-hand pane is blank and there is no option to “Close” or Choose” documents and even if they double click on the document it does not open.  The configuration appears the same in both environments as the Test environment is simply a copy of the Production environment.  I would attach screenshots but I could not figure out how to upload them.  Please assist.