Hi,
sorry but the switching mecanism supposes all new functionalities are supported in higher versions, or change

lowerthan="15.7.0.136" 

with

lowerthan="16.0.02.02" 

if you have no monitored ASE between SP136 and SP141

Else force the colector : Engines_V157.xml rather than Engines_switch.xml

Best regards
Jpm