buildconfig.java says \ BuildConfig.java (The system can not find the specified path) and what is aug is to create the buildconfig.java in the specified path but when entering the buildconfig.java it tells me this: files under the "build" folder are generated and should not be edited and when doing sync I will delete the BuildConfig.java and I can not compile the project please help,
I'm trying to compile a buildbox game. 
what you could do is see if in your build.gradle the minifyEnabled attribute is true, just put it in false and this should solve your problem. : D.
android {
buildTypes {
release {
**** Lo demas que este aca *****
minifyEnabled false //Ponlo en false
}
}
...
}
maybe you can solve it from your android studio this is the project with the problem: link and this is the buildconfig.java: link
and if you can not solve it, try to do another procedure. This is the unencrypted project: link
If you are lucky in solving it, do not forget to tell me I could give you the game program in 2d without code