Hey AmeriCAIN,
I did a quick search on Google for ya and found that there is indeed a problem.
A workaround is to use Privoxy for the SOCKS proxy and use Privoxy's HTTP proxy settings in Opera.
http://www.archivum.info/opera.general/ ... 00403.html
Hope that helps... you might want to try OperaTor, which has Tor and Privoxy combined with Opera:
http://portablefreeware.com/?id=980
Or use PortableTor (
http://portablefreeware.com/?id=1088) in conjunction with Opera@USB.
I know that makes Opera quite inconvenient for your usage, but I am still an Opera advocate! You are right to say that a lot of features are built into Opera, which is why I use it for everyday surfing. For more advanced usage like web development, I use Firefox as a supplement.
Let us know what happens.