What specific fonts, appearances, object types etc. are used in the AI file? How do you use them on your timeline? Looks liek you are using 3D layers and something goes wrong there...
Font: Helvetica Neue (I use Bold, condensed bold, and light)
I do have a clipping masks in some of the layers in my AI file
On my timeline I mostly use opacity, position and scale.
no 3D layers
Another thing that happens after I get the allocate memory message and close the application is I have to relink the layers to some of the objects from my illustrator file. When I open it, the layers are still there, but nothing is in them.
I believe I fixed the issue. My illustrator file had a clipping mask with about 500 tiny vector circles. I then decided to create a pattern in illustrator and this solved the issue with loading the illustrator into my after effects. I guess if the illustrator file is too big it will not transfer well into After Effects.