device conflict help

[aleser]

Hi all and sorry for my bad english.
I have a rock star guitar and a joystick type drum pad that work perfectly individually but when I put both together to play local multiplayer one takes it as an unknown device.
if I put the drum last then the guitar doesn't work, and if I put the guitar last then the drum doesn't work. I leave the report of the controller 1.6

<DEVICE>

<NAME>USB Joystick </NAME>

<VID>121</VID>

<PID>6</PID>

<MAGICBUTTON>-1</MAGICBUTTON>

<MAGICDATA>-1</MAGICDATA>

<XROTCEN>0</XROTCEN>

<GYROCUTOFF>99</GYROCUTOFF>

<TYPE>2</TYPE>

<BUTTONS>

<GREEN>48,128,0</GREEN>

<RED>49,128,0</RED>

<YELLOW>50,128,0</YELLOW>

<BLUE>51,128,0</BLUE>

<ORANGE>52,128,0</ORANGE>

<UP>32,0,4294967295</UP>

<DOWN>32,18000,4294967295</DOWN>

<LEFT>32,27000,4294967295</LEFT>

<RIGHT>32,9000,4294967295</RIGHT>

<BACK>56,128,0</BACK>

<START>57,128,0</START>

<BASS>53,128,0</BASS>

</BUTTONS>

<DEVICE>

<NAME>Harmonix Drum Kit for PlayStation(R)3</NAME>

<VID>7085</VID>

<PID>5</PID>

<MAGICBUTTON>-1</MAGICBUTTON>

<MAGICDATA>-1</MAGICDATA>

<XROTCEN>0</XROTCEN>

<GYROCUTOFF>99</GYROCUTOFF>

<TYPE>0</TYPE>

<BUTTONS>

<GREEN>49,128,0</GREEN>

<RED>50,128,0</RED>

<YELLOW>51,128,0</YELLOW>

<BLUE>48,128,0</BLUE>

<UP>32,0,4294967295</UP>

<DOWN>32,18000,4294967295</DOWN>

<LEFT>32,27000,4294967295</LEFT>

<RIGHT>32,9000,4294967295</RIGHT>

<BACK>57,128,0</BACK>

<START>56,128,0</START>

<BASS>52,128,0</BASS>

</BUTTONS>

</DEVICE>


I would greatly appreciate your help