The issue focused on allowing developers to define file extensions for Mac OS X applications and developers could decide whether they wanted to accept those extensions or not. While most developers accepted them, only some developers chose not to accept them. Even though those developers gave clear guidelines for developers to follow in accepting extensions, several developers chose not to accept extensions for reasons related to incompatibility with existing extensions and developer responsibilities. While those developers helped developers avoid incompatibility issues and developer responsibilities, those developers didn't receive much feedback from developers about how