There should be no hang ups with 1080. What version of VP is being used. Try the latest. For licensed users upgrades are free for up to six months from purchase date. After that, VP will continue to fully function but a fee will be required in order to register the newest. Retain your old install file and registration info.
If that doesn't help, upload and share so someone here can check it out. A 40-minute project will take some time to upload, but it's not difficult and can be private.
Here's how... http://nch.invisionzone.com/topic/23659-tips-for-getting-help-on-this-forum/
If it contains sensitive material link it in a personal message (PM). Click the envelope above. It won't be passed on or retained. Use FILE|SAVE PORTABLE PROJECT AS, not simply SAVE PROJECT, and don't forget to share it. Before you attempt the upload, right-click on the folder that was created by SAVE AS PORTABLE PROJECT, click PROPERTIES and verify that the file size is not too big for the free space available on the server.