we open access to a BAT with BATpreload_() and close it with _BATpreload() not the other way aroung
we open access to a BAT with BATpreload_()
and close it with _BATpreload()
not the other way aroung

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb