Hello,
thanks to a contributor with php knowledge, a patch to make serweb 0.9.4 working with openser is available at:
http://voip-info.org/wiki/view/OpenSER+1.1.x+and+SerWEB+0.9.4
The patch is fresh and not tested too much, but should allow to start openser and serweb together and opens the framework to improvements by other members willing to use the two applications.
If you get stuck at a point, post it to devel@openser.org along with description and error messages -- maybe someone will be able to get a workaround.
Cheers, Daniel