runing multiple claymores

[nakataf01]

Hello
   i want to run a multiple claymores on my rig that contains 3 x r9 290x and 3 x r9 280x, i want to run r9 290x on eth and r9 280x on zcash because it more profitable. when i start claymore's the first one run correctly, but the second one i get this msg "bind failed with error: 10048"