I am using social.js (https://gist.github.com/rampicos/4320296) to authenticate user in my Appcelerator mobile app. I am however getting the error:
[ERROR] : Social.js: FAILED to getRequestToken!
[ERROR] :oauth_parameters_absent=oauth_consumer_key&oauth_problem=parameter_absent
[ERROR] : 2015-10-02 22:15:06.628 Example[78076:253765] Simulator user has requested new graphics quality: 100
The LinkedIn developer web site announced server maintenance on October 2nd. Is it related to your problem?