I have recently duplicated a system to be able to apply a individual
system per zone. When I run the model it informs me that I have 100 bad
building components but it doesn't generate a .sim file or a bdl error
report so I have now idea where the bad components are to fix them.

Before I duplicated the systems the model would run and before I
duplicated the systems for every floor I trialed the duplication on one
floor and it would run.

Has anyone got any ideas on what the problem could be?

Gary Chatfield