What kind of assets are you trying to drag in? Does AE crash if you try dragging them in to the Project Panel?
There are only 3 assets that I've tried to put into the Composition panel:
1. an MP3 file 2. an MP4 video file and 3. a PSD logo. I went out and
bought the Adobe After Effects CC Classroom in a Book (2017 release) and
downloaded the asset files from their website. Simple files, not too big or
anything. I'm very determined to make stuff with AE but can't even get off
the ground. It's hard to believe that Adobe isn't aware of this. Needless
to say I'm very frustrated!
Try dragging them in to the project panel and see if you have a different result.
I've tried that too but it still crashed...
Can you import them into After Effects using the Import command?
Sorry for this issue. Did you ever find a solution? Please let us know if our experts’ advice helped you or if you still need help.
Yes, Rob Shultz has correctly identified the solution. Thank you, everyone!