>>There is no stack trace in this message. BTW, I tried to google on this error and there were lots of hits. I added Google syndication at the end and there were few hits as well. I haven't checked each link, though, too late right now.
>
>That's the stack trace I have. Whenever I have this kind of error, I cannot get the stack trace but those two lines.

Ok, for now substitute + with & and see if the problem persists.