InfoPath Dev

I have a very complicated InfoPath form.  While working on it recently, I began having trouble using quotes in formulas.

For example =boolean("True")  This errors on the quotes.  They show up as square blocks.

I have code inside the form that uses the exact same and I even copy paste it, but suddenly formulas do not like quotes...

Any ideas?

Interesting...

I appears, somehow my system font was changed (or I assume).

If I copy/pasted the formulas into NotePad I received the HTML 4.01, ISO 10646, ISO 8879, Latin extended A and B, format (the curly double quotes).

If I copy pasted the straight up and down quotes (from NotePad) - the rule was accepted.

Now to figure out where the font selection for InfoPath designer is set.