Having one heck of a problem with JTAGICE mkII + ATMEGA8

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Hi,

I am trying to use the JTAGICE mkii to program the ATMEGA8 via ISP.

AS61 recognizes the JTAGICE mkii programmer, but it can't or I can't set the voltage, which is stubbornly remains at 0.0V! Please see attached image.

Please help! Going crazy :x

My JTAGICE mkii info (with serial number not shown):

JTAGICE mkII
Debug host 127.0.0.1
Debug port 49182
Serial number XXXXXXXXXXXXXXX
Connection com.atmel.avrdbg.connection.jungousb
Master Firmware Version 7.24
Slave Firmware Version 7.24
Master Hardware Version 0
Slave Hardware Version 1

My connection from the 10-pin connector to the ATMEGA8:

Numbers in parens are pin numbers of the JTAGICE mkii pins. What's the nTRST pin for, by the way? I use nSRST pin to connect to the ATMEGA8's RESET pin.

TCK (1) -> SCK (ATMEGA8 this side of this text)
GND (2) -> GND
TDO (3) -> MOSI
Vref (4) -> Vcc 5V from USB
TMS (5) -> NOT CONNECTED
nSRST (6) -> RESET pin
vSupply (7) -> Vcc 5V from USB
nTRST ( 8 ) -> NOT CONNECTED
TDI (9) -> MISO
GND (10) -> GND