ARM-JTAG-EW and IAR Embedded Workbench problem

I’m using the LPC-1766 and ARM-JTAG_EW, I have download the USBHost demo from http://www.olimex.com/dev/lpc-1766stk.html and I have the IAR Embedded Workbench 6.0.

I follow the procedure written in ARM-JTAG-EW.pdf (chapter 3 and chapter 4) and I have set in the Project->Options… :

Driver:J-Link/J-Trace

Interface: JTAG

JTAG speed: Adaptive

When I do Project → Download and Debug I found:

“ ERROR: Function JLINKARM_EMU_COM_Read not yet implemented, error code -1062 (Function not
implememted)”
.

I press Retry and the software is downloaded to the board but then I found the

“ERROR: Target memory read error, error code -2114 (ADIv5 Debug Port invalid response“:

when I press retry and then ‘Go’ the debug seem to work fine but the USB Host demo seems don’t work because when I add a usb mass storage on the board the demo don’t find it (HOST_RhscIntr never became 1).

I hope anyone can help me…

Thanks