Can you import the footage file into an NLE (Premiere or Final Cut) and re-export at 24fps, then try importing to AE again?
Imported into Final Cut Pro 7.0, placed it on my timeline and I got this message: "Attention - This clip does not match this sequence's settings or any of the sequence presets. For best performance your sequence and External Video should be set to the format of the clips you are editing. Change sequence settings to match the clip settings?" I clicked 'Yes' and then got this message: "Sequence Error: Unable to perform edit. The duration of the resulting sequence would exceed the maximum duration, which is 12 hours (or 6 hours for sequences with high audio rates)."
The clip is 26:27:03 (it's a speed painting over several days).
I wonder if the issue is the large size of the file. Would it be possible to render out your original edit in smaller chunks, say 3GB each? Then piece them together in AE. I have no idea if that's the issue, but it might be worth a shot.
That's an insane duration. I'm sure you will have problems with that in any system since you will defeat the internal math used to calculate time and frames. It's amazing that AE has actually allowed you to produce such a long file without a hitch. As suggested, definitely split it up.