That's an issue with Windows. For some reason your operating system no longer associates After Effects with .aep files.
Right click on one, choose Open With... and, once you pick After Effects, choose to always use that program to open those files.
Tried it and "Open with" doesn't work. If I open AE and drag the .aep file in, the project opens.
Had a problem with audition and the following solution worked:
In order to fix it you just have to update the sesx registry key
HKEY_CLASSES_ROOT\.sesx to AdobeAudition10_sesx
1) Winkey+R, type regedit
2) search for the path HKEY_CLASSES_ROOT\.sesx
3) double click on (Default)
4) type AdobeAudition10_sesx
5) hit Ok, open Premiere again and done
Could a similar approach do the trick?
had similar issues with associating the files to my software. my problem is it was associating it with the wrong version. finally I found a few helpful tips.
1. click run and in the search type set associations. you will see this
2. type .aep
select it from here
if this does not work, then a registry intervention is required. I had to do this once from this answered response in this thread:I cannot associate files with Adobe Photoshop CC