There is a conflict between the Facebook Connect plugin and the Google Play Games Services plugin, both of which can be found in the featured plugins list. The Google Play Games Services plugin is now obsolete, and should no longer be used. Our build system was recently upgraded to eliminate the reason for that plugin, which was provided as a stopgap solution.
This issue seems to be a particular problem for Construct2 developers, but can affect anyone who is using the Google Play Games Services plugin from the featured plugins list. Please see the following post for details regarding the resolution of this problem and to determine if this is a build error you are experiencing.
https://software.intel.com/en-us/forums/intel-xdk/topic/599093#comment-1851012
