When I installed Android Studio on my mac (OSX Mavericks) and created a project, I got this error:
Failed to sync Gradle project 'project name'
unable to find method 'org.slf4j.spi.LocationAwareLogger.log(Lorg/slf4j/Marker;Ljava/lang/String;ILjava/lang/String;[Ljava/lang/Object;Ljava/lang/Throwable;)V'
When I first had this problem I had gradle-1.12 installed. I then installed gradle-2.1 and still the same problem. I then installed gradle 1.1 and still the same problem. I've been trying to fix this problem for the past week to no avail.