[Twisted-web] livepage url confused

In my livepage code the url tree seems to be confused url.root ... returns the current path while url.root.child('some child') .... throws me an error When I looked at url.py I noticed that one may call rememberRootURL() on the rootpage to remember the correct root...doing something like this failed though: req = context.locate(inevow.IRequest) req.rememberRootURL() How and where would I remember the correct root url? #noema