Setup: There are strange symbols in one of my text fields
Most likely you have copied and pasted from a word processing program, like MS Word.
The text module cannot accept many of the unique formatting codes associated with word processing programs.
If you need to copy text from a word processor, copy it first to a neutral program like Notepad.
Once in Notepad, all formatting codes are striped and you can use cut and paste to move the text to the system.