Importing nbib files from PUBMED

I am trying to import files from Pubmed into Endnote X7 using a Mac (El Capitan).   On each attempt Endnote crashes. Is there a way to sort this.  Thanks for any solutions. SG

have you updated to x7.7?  

EndNote: PubMed News Alert

EndNote X7

Users should update to X7.7 or later to continue to search PubMed inside of EndNote. To update EndNote X7 , please see this article.