My Razer Naga Lefthand stops responding after I install synapse. Had a little problem with left and right buttons switching but resolved that by disconnecting the usb and reconnecting it. 
Now the mouse stops responding at all. If I remove all synapse programs and run on windows driver it work no problem, but as soon as I reinstall synapse and it loads up the mouse go dead. Tried other computers and other usb ports. 
Anyone recognize this issue?