Did you follow the instructions in the changelog?
Code:
== 02/27/2013 ==
KLS: Changed how shared memory works:
Instead of System V/windows pagefile shared memory we now have shared memory that's backed by the filesystem.
What that means is basically instead of EMuSharedMem(shared library) we now have shared_memory(executable), shared memory will be persistent between runs until you delete or reload it using the shared_memory executable.
STEPS FOR PEOPLE WHO CAN'T BE BOTHERED TO FIGURE IT OUT:
1) Create a directory in the place you run world/zone named shared and make sure files can write there.
2) Run the shared_memory executable from the same place you run world/zone (it's basically doing the loading we would do on startup so will take a moment).
3) Run world/zone/whatever