I just noticed that I have inadvertently removed assigning 'ndr' to the resulting 'NeedsDetachReceivers'. So attached is an updated version of the fix.
Klaus, does this patch you just posted nullify both of Anssi Hannula's patches (vdr-1.4.0-transfermode-primary-limit.diff and vdr-1.4.0-transfermode-priority4.diff) or only the "priority4" patch.
Best Regards.