Anyone else get juked by Revolution Health?

Hi, anyone else participate in the Revolution Health focus group, which was advertised in a newsletter here? I thought I'd give up a couple of hours of my Chicago time to earn $200 for some fun money.

Alas, the cashier's check they gave me was not signed, and they handed me the stub. I took it to Citibank on Monday and they would not honor mine or my friends because of this. I have emailed the focus group leader, Dana, and she has not replied. Anyone else have or resolve this problem? I admit that I never deal with cashier checks, and they told us we were all set when they handed them over at the end.