Yup, it looks like we're trying to use a function from our library that isn't included with the SCLogin module. To fix for now, please set the Login and Logout redirections to "Same Page". That will skip the call we're trying to do and not throw the error.
Sorry for the trouble, we'll try to fix the code over the next few days and re-release the stand-alone version that can work with redirections.
Thanks,
Alex