probably has nothing to do with Bluetooth, what version are your installing? what did you do to install DP1? Probably from all the PS/2 stuff. Got a usb mouse and keyboard to use while installing and get that junk out of there?
I don't think this has anything to do with your ps2 kexts. I think you have the same issue as me - video kexts not loading. I don't think ML supports the Intel 4500MHD. I'm assuming that's your video card. Right?
Its the problem with DSMOS Has Arrived. What you have to do is remove all the AppleIntelHDGraphics.kext's and all the AppleIntelSNB.kext's from the USB. They are in System/Library/Extensions.