I'm starting to work on the next version of PRPC.
You can read about my plans at sourceforge.
http://sourceforge.net/forum/forum.php?forum_id=519742
I just posted a complete initial implementation of the three areas of focus for the 1.4x series.
1) Configurable ip addresses.
2) Logging facility for messages and errors.
3) True remote proceedure call (RPC) implemented via client modules.