Quotation marks for one. The long dash, I believe. Asterisks, if memory serves me right. Parentheses. Any of the odd characters which result from translating formated text into txt format. I can go through and look for non standard text characters on each resume I post, or I can just not post them into memo fields.
I have tried "straining" the material through clipmate (those of us with less knowledge often resort to guile), but it's a pain. I would need to reset the clipmate filter each time I use it, so that's out. Anyway, it's terrific to be able to search for a combined skill set then pull up the resume and send it to a client without having to reformat an ascii document.
Possibly related to this is the warning a check on table structure brings up: This field contains low ascii characters for alpha numeric fields. It's possible that the "low ascii characters" are what are being rejected.