@Anatriax Just checked MO's nexus page. Apparently MO does not get along with *SEs (OBSE, SKSE, etc) when set to Script Extender as the load mechanism due to *SEs loading files before MO can move the files to the virtual directory. That is possibly why you don't remember having to do the WB workaround for OBSE in the past, as it would have been unneeded for non-Steam versions.