Problem with CRM - Viewing/Editing Invoices

Problem with CRM - Viewing/Editing Invoices

I am new to CRM. I was successful importing contacts & products. I have been able to enter invoices, task & campaigns. However, whenever I add or create a new object, the screen maintains the 'loading' graphic. In order to see what I have added I have to go to a different module then click back to the module I was using.

Also, most importantly, I am unable to edit the invoices. When I go to view or edit, the loading graphic spins and the page never populates. No matter how long I wait. :!:

Screen print attached.