Build Failed

I get this when I try to build and launch:

LogStats:Warning: MetaData mismatch.

Did you assign a stat to two groups?

New //STATGROUP_Threads//FLauncherTask///Thread_24fc_0///####STATCAT_Advanced#### old //STATGROUP_Threads//FLauncherTask///Thread_2ee8_0///####STATCAT_Advanced####

LogPlayLevel: Completed Launch On Stage: Deploy Task, Time: 0.000037
LogPlayLevel: BUILD FAILED

BTW, I must also note that it happens on any of the premade projects or an empty project.