Your problem seems similar to the one described in SR 11180804 (IC5141), it's worth giving it a look I think !
Basically, the 'libManCreateLib' function is not valid cds function, that's why your interpreter is complaining about it. My guess is that this functions comes with your PDK/CAD package. I'm suspecting a defect when loading your PDK. Please ensure you haven't missed any 'source' or so.