I'm using the same SPCascadeDropdowns code across several SP forms and they all have stopped working over night. They worked fine for the last couple months and no code change has been made to the JS. The related lookup list have not changed either.
using SPservices version 2014.02
and jQuery v1.11.3
My code is
relationshipList: "Region - Environment Lookup",
In the Firefox debugger I see the following js error occur when the function runs on pageload:
Posted this in the issues section also but haven't seen a response.
If it suddenly changed overnight, this would suggest to me that it was some other change that had caused this. What else has changed over the last 24 hours? This function seems to work generally fine for me (with the same config as yours, although I am using