alternately good and bad results from plugin

Hi!

I have some troubles runnnig this plugin, I either get a good/ok result or an error from the plugin:

GOOD RESULT:
OK – 2 objects found | ‘DEFAULT/Controller 2_controllermainmemory’=1155 ‘DEFAULT/Controller 1_controllermainmemory’=1155

BAD RESULT:
This is the command i was trying to execute: Error: Error an internal operation failed. Trace information provides more information. [Internal Error: An unexpected condition was encountered while processing the request]
Error running the sssu command
sssu “set option on_error=continue” “select manager 10.1.1.24 USERNAME=myUser PASSWORD=myPass” “select SYSTEM DEFAULT” “ls controller full”

NoSystemSelected> select SYSTEM DEFAULT

DEFAULT> ls controller full

Error: Error an internal operation failed. Trace information provides more information. [Internal Error: An unexpected condition was encountered while processing the request]

Can you please help me?