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Well, you answered your own question - clean out your system font cache, disable TypeKit and any otehr font managers, throw out any "bad" fonts. also check your graphics card settings and other system stuff for accelerated font rendering stuff and antialaising settings.
How do I clear my system font cache?
So just to keep this post alive since I got no other responses. I searched on how to clear the system cache for Windows 10 and I got this:
Clearing font caches in Mac OS X
What works best is to use external software to remove the font caches for you. I recommend FontNuke that is available for free here.
Clearing font caches in Windows
To remove the font cache, delete the following file:
Adobe applications use their own cache .lst-files to store font information. To manually clear this application font cache, you have to search these files and delete them. Teaching a blindfolded monkey to build a rocket is easier than searching files on a PC. Here's a helping hand:
- Go to Start > Search > Files and Folders
- Choose 'Files and Folders' and type 'Adobefnt*.lst' into the Name-text field
- Make sure to activate the checkboxes 'Search in system folders, Search for hidden files and folders' and 'Search in subfolders'. Then click on 'Search'
- Delete all .lst files listed
It didn't work. Then out of nowhere After Effects starts working again! Hooray! Then I do a few jobs, then out of nowhere it STOPS WORKING AGAIN WITH THE SAME GODDAMNED ERROR! Mind you I'm not doing anything strange on my machine. As you might tell I'm really frustrated. HELP!
I'm gonna try clearing the font cache again, but seriously? Do I have to clear the font cache every 3 days?
Maybe you've got a bad font file somewhere that's causing this.
I uninstalled the two most recent fonts I installed for a project. Granted those fonts DID give me problems. However, it didn't help. I still get the error.
The ONLY THING THAT HELPS, is searching for "FNTCACHE.DAT", opening the folder, deleting the file, rebooting the machine, then starting After Effects first thing when it starts.
I noticed that when it DOES start it'll take forever almost like its looking for, waiting for or creating a file that it needs to start. My guess its the FNTCACHE.DAT file. :/
At this point I'm considering making some action that automatically deletes that particular file when the computer shuts down. Any ideas??
I still need help. Please Adobe! Don't fail me.
This is just a user-to-user forum where your fellow users volunteer their time to help where we can (and sometimes Adobe employees poke their heads in). If you want official help from Adobe, you will need to contact Adobe support.
Go to Adobe.com/support and click on the Creative Cloud icon first (regardless of what else it shows). That'll take you to the CC apps you have installed and you can choose AE and go from there.