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I am new to PSSE so I am starting with savnw.sav and modify savnw.dyr to get familiar with it before moving to a 250-bus network. I am trying to add composite load models (CMLDBLU1) to three load buses. But, I get an error saying "Return to Dynamics terminated--system model requires too many." The dynamic simulation runs fine after getting this error. Is it something I need to be aware of? Can anyone help me to remove this error?

Below is the output I get after loading .dyr file:

Generator models use:

CONS 1- 82 STATES 1- 35

Excitation System models use:

CONS 83- 144 STATES 36- 53 VARS 1- 3

Turbine Governor models use:

CONS 145- 177 STATES 54- 63 VARS 4- 8

Shared Load Characteristic models use:

CONS 178- 573

Return to Dynamics terminated--system model requires too many Unshared Load models use:

STATES 64- 144 VARS 9- 300 ICONS 1- 96

SUMMARY OF MODELS READ:

GENS: GENROU GENSAL 5 1

EXSYS: IEEET1 SCRX SEXS 3 1 2

GOVS: TGOV1 HYGOV 3 1

USER: USRLOD 3

NEXT AVAILABLE ADDRESSES ARE: CON STATE VAR ICON 574 145 301 97

Compile models not supplied by PSS/E and create user dll