I enabled/disabled each and every addon to find the culprit but I can't find it. Can anyone please help me here? Not very good to have unhappy members.
You are right. I get this error:That doesn't appear to be a 100% default style.
That said, this may well be an issue with the image processing on your server. Can you upload an avatar? If this changed without you doing anything, it may well be a server side change within PHP.