From the sounds of it, it would be your ISBoxer configuration.

You can check out what ISBoxer is sending to the game by using the Debugging Console. http://www.isboxer.com/wiki/ISBoxer_Debugging_Console

But normally, if you want help with ISBoxer Configuration issues, you normally need to share your config. http://www.isboxer.com/wiki/Configuration_Sharing
And maybe ask either on the ISBoxer forums, or use the ISBoxer IRC Chat (blue speech bubble in ISBoxer Toolkit), or http://isboxer.com/chat/