Firstly this problem emerged without no rhyme or reason. Probably it appeared after last updating.
The warning I get says "I have a version conflict" but i can't find the old version code block anywhere. here picture..
And when i glance the BaseGameUtils(Android High Scores Project) gradle file, i see this,
the code block in this picture ,
if (!project.hasProperty('appcompat_library_version')) {
ext.appcompat_library_version = '25.0.+'
}
if (!project.hasProperty('support_library_version')) {
ext.support_library_version = '20.0.+'
}
when i try to change appcompat_library_version or support_library_version, i get error. also i don't know .+ means. is it mean "it doesn't matter?" anyway, for example i changed it 25.3.+ than i got same error. when i click "sync now",
v24\valuesv24.xml named xml file open. and i get error.
maybe the problem is not about that i last mentioned. but however i want to share this.