They do give you quite a few clues on the page you linked to. Breaking down the possible causes paragraph:
Similar to error 3 :: 160, this problem may be caused by a mismatch of your system language settings and the language in which the program is run.
Open the System Preferences and click on the International icon. If it's not highlighted, click on the Languages tab. Click on the Edit List... button and uncheck everything but English and U.S. English. Click OK. In the left column, only the two English choices will now be displayed. If necessary, drag and drop English so it is above U.S. English. Close the System Preferences and restart, or log out and log back in for the language changes to take effect.
Additionally, there may be problems with user privileges and file permissions that prevent After Effects from accessing the directories required therefore. These include the system font directory as well as the Adobe font directory shared by all Adobe applications.
Launch Disk Utility. Highlight your startup drive and click Repair Permissions.
For Mac OS X (Snow Leopard) in combination with CS5 products, this may be caused by the Verdana font from Microsoft missing because Apple no longer install it by default on this version.
Check to see if a version of Verdana is in the /Library/Fonts/ folder. If not, there are various ways to get it. Microsoft Office for Mac will install Verdana. If you have Leopard, you can extract it from the installation disk with
Pacifist. Or, purchase and download it from Microsoft's web site. In all cases, make sure to get the full set, which includes:
Verdana Bold Italic.ttf
Verdana Bold.ttf
Verdana Italic.ttf
Verdana.ttf
I'm not seing a pg. 24-25 there?
Hi macjack,
He'd be referring to the article's PDF version.