Weaponiser supports Ableton Live on both OS X and Windows.
However, we have found that on some OS X machines, the VST version of the plugin may not be recognised by Ableton.
The AU version will usually be recognised without any issue. If you cannot use the VST version, please enable AU plugins in Live’s preferences, and find Weaponiser from the AU dropdown section of the plugin menu. If you still cannot see your plugin in the plugin list, rescan your plugin folder from the preferences menu.