A known issue with the FM Books Connector plug-in when dealing with the PCQB_BeginSession connection type (Share Mode) parameter, it's value will default to 0 (Single-User) even though the plug-in may show the default value being 2 (DoNotCare). The solution for this issue is to explicitly choose "DoNotCare" for the Connection Type (Share Mode) Parameter unless you would prefer to use a specific connection type.