I load a project I made some years ago - on pro 11 - I can play it but when I click edit the screen goes completely blank - no timeline, or frames - Help
Have you tried loading any other projects made in MEP11 into MEP15 and do they show the same behaviour.
Try the following: -
1. Load the project into MEP15 then immediately save as a new project in the new format. Close MEP 15 then restart and load the newly saved project, then try editing it.
2. If 1 fails then, with MEP closed, using Windows Explorer search for a file called movieedit.ini or videodeluxe.ini - I cannot remember which version the file name changed - it may be a hidden file so you you need to set the search to include hidden files and folders. You may find several - the one you want is the largest ~18 - 20 kb in size, and delete it. restart MEP and try loading the project again.