Multiple Assests Transactions

A new things happening here, and I can't pinpoint why it started doing this.

Every time (for example) we go to move assets, and we click on add nothing shows up in the list below. However if you click save the transaction is shown on the following page as completed. So on the multiple transaction page where you ADD one or more, no assets show anymore.

This was working at one point in time but seems to have stopped once we crossed a threshold number of items. No one has access to our server  files except for me, and I have not updated any files with the exception of a suggestion for JSinclair of editing asset_edit.php for another issue I was having.