[Kurt Klinzing]

After Effects was painfully slow for me. I took your advice and re-rendered the .MOV file from my camera into other formats.

The original files were 31 Mb in size. It was 9 seconds in length.

I exported it in various formats with different compression. I then made 2 layers. I rotobrushed one and added a color effect to it. I then previewed the composition.
The times indicate how long to create the preview. The speed up from the clip that came directly from my camera to any re-rendered format as almost 100 times.

Format Compression Size Time to render

MOV Direct from 31Mb 2700 sec (45 Minutes)
camera
MOV H264 40Mb 33 sec
MOV Animation 600Mb
AVI no compression 1000BM 39 sec

THANKS!

[Kurt Klinzing]

I had a similar error. This actually worked.

Go to the Control Panel – Language Settings>

Change your language to Chinese

Reboot.

(After effects started working)

Change your language back to English.

[I also deleted my Adobe preference file. Hold
down right after you start AE. Deleting the preferences often
fixes problems, but didn’t for me this time.]