The cure is similar for my Mac. Problem is, I have had to do this several times in the last few days. Never had this problem before. In fact, never had to clear cookies before. Somebody is "doing something."
I called Pi Yee today after experiencing the same problem. Al asked me to clear the cookies, and it worked...until the next time I logged on the main page.
Cleared them again, worked fine. Hopefully, this won't continue. Something has changed.
Please let me know if you are still unable to access the Green Chip forums
Please email me at chris@bj21.com and I will work with you on a solution to the problem. In your initial email, please specify which web browser you are using and any steps you have taken to rectify the situation.