Sounds like now the dll is not the version the game expects. Use the updater to hopefully correct the problem. You may have to check some of the recent posts on the updater first.
My updater automatically says the following:
"PlaneShift Version 5 for win32.
Checking for updates:
This updaterinfo.xml file is marked as unactive and will not work. Please get another one.
Updater finished, press enter to exit."
How can I change the "updaterinfo.xml file?"