After installing After Effects, when I try to open it, window says: AE warning: unable to load font verdana italic (I click OK) then window 2 says: Cannot load font required for the AE interface. Please replace the font or reinstall AE (I OK and wonder what is font required?) then window 3 says: AE can't continue: unexpected failure during app startup (I think – what the ...?!)
Please explain how to get into After Effects.
What exact version of After Effects? I am guessing that you have not installed the most recent update, which fixes such a bug:
Regarding your question about which font After Effects is looking for: The answer is in the error message that you quoted; it's looking for the Verdana font.