i tried create new cordova project in netbeans , when step comes have select required js table tried add new 2 js. showed network error , asked me configure proxy. updated entire lib , table not show lib files instead show loading.
try remove cache directory , restart netbeans. can find location of cache dir in help->about in netbeans. if won't help, need remove user dir.
btw js library management has been rewritten upcoming netbeans 8.1. "update" action in netbeans slow , time consuming. try netbeans dev build here. has better support js libraries management (including npm , bower)
