This is happening to me aswell, I recconmend going to the support page and contacting SONY yourself. I'm about to do that and the answer normally will be given to you within 24-48 hours. Make sure you inclued everything in detail. I already tried this with a video I own and one I rented over the PS Store.
P.S. After and sometimes before you put in the Question you will have some Instant answers come up, check them out for an answer too.