I to have faced the same find of problem in the past; but no using a Nokia H/s; What you an do is ask the customer care to have the R-world resetted from their end; after which u get a confirmatory msg, as R-World has been resetted and it also asks you to reset it from the Phone going on to R-world--Reset R-Menu....
Then try to access...
Also 1 more thing Nokia R-world does it run on a JAVA or a Brew Platform....