Hello.
I have a SK-MLPC2387 board with LPC2387 processor and here some problem with it. I downloaded Keil HidUsb examples for LPC2378 and loaded it (hex file) in LPC2387 using latest version of FlashMagic utility (ISP). The loading was sucessfully finished and veryfied, then I disconnected board. When I connected the board again (after ~ 20 sec), operation system (Win 7) didn't find new device looks like USB cable was disconnected. The power LED is on, and I don't know where source of problem..
Thank you very much, now it is working. =)