'Specified string literal size exceeds maximum supported string literal size' - gobbledygook English

Why doesn't a moderator find a definitive answer to the query that has been posted a number of times about this irritating pop-up error message? I get it every two minutes, literally, and it's very annoying

Hi-

In hours of searching I have not found a definitive answer to this question.

I am visually impaired,  In Outlook for Mac 2011, is there a way to change the default font for composing, and/or reading mail messages.  I am aware of the zoom and other features, however can there be a change in the default font that does not change the font the receiver of the e-mail sees?

Thank you.