Have there been issues in downloading & using the nltools library for neuroimaging analysis?

I have tried to use nltools in my conda environment to do some of the fMRI analysis in PSYC 60 via Python, but it is the one package that is not working for me. numpy, scikit-learn, and seaborn, for example, work, but the other packages have trouble importing into my environment. I am not the biggest Python user, so I may need some explanation, but could someone help with this?