Other players discovered at the game's launch that the Gibson Les Paul guitar controller bundled with the PlayStation 3 version of Guitar Hero III: Legends of Rock was initially not compatible with the PlayStation 3 version of Rock Band, despite Harmonix stating that any controllers that followed the open-controller standard would work. While this incompatibility could have been resolved through technical solutions, both Harmonix and Activision cited the other party as being at fault for failing to correct the incompatibility. Harmonix developed a patch to fix the issue, but it was blocked by Activision.[71] Activision stated that MTV Games was unwilling to reach an agreement to pay Activision to use the Guitar Hero III technology in Rock Band.[72] This incompatiblity also applies to the Wii's Les Paul peripheral. However, a patch for the PlayStation 3 version of Rock Band, released on September 11, 2008, will allow the Guitar Hero III Les Paul controller to work with Rock Band. Nyko has released a PlayStation 3 version of their “Frontman” guitar controller that is compatible with both Guitar Hero III and Rock Band.[73]