Strange behavior of Type56 if NType as Output

Today I noticed that, in Type56 all outputs after NType 961 will not be saved into the B17 file, and the values are also incorrect. In the Type56 manual:

NTYPE 961 B4_QSOLAIR BAL 4: convective energy gain of zone due transmitted solar radiation through external windows which is transformed immediately into a con. heat flow to internal air [kJ/hr]

It is really strange. If I remove the NType 961 out of the outputs definition, the outputs list will work again.