Inability to open premiere pro file

If this is a shiny new laptop you may need to spend soem time straightening out its graphics driver and configuration. Often new machines have the wrong drivers, be that older versions or too fresh game optimized versions where a more conservative studio driver would be required. Start by checking your hardware acceleration settings in AE and as a test try to import one of your plain video files, then tippy-toe through your settings in AE and Premiere as well as your graphics driver to see what could be the problem. Similarly, check your cache settings in the programs and things like permissions on temp folders. There's really no single "click this button" solution here, you have to take it step by step to figure out the culprit.

Mylenium

Without any specific info on your project, your computer and so on we can't realyl tell you much. From the project containing a footage type that is not supported in AE to cache issues to some of the specific weirdness that currently seems to plague Macs this could be anything. Providing some info certainly might at least allow some rough guess...

Mylenium