Recently we have experienced ws100 process in and out giving RUN THE MASTER WS messages. If you run process in and out from a WS number other that 100 it works. I spoke to RTI and this is the solution.
Delete the ws 100 folder. Then you need to run the KEY on WS1 (this part is important if not run from WS 1 this will not work) Jog the dates and apply the dates make sure you apply the date on today. then from the run command type in (your path to RPRO) IE R:retail8rprorprodb.exe ws:100
this will fix the issue. Just remaking the WS 100 folder will not fix it unless you do all of the above steps.
in answer book and blogged