Timeout bei AVR flashen mit STK500V2

Hallo,

erhalte Timeout beim Versuch ATtiny 25 zu flashen mittels avrisp v2:

avrdude -p t25 -c avr
ispv2 -P com5 -e -U flash:w:Test2.hex -vvvv

         Using Port                    : com5
         Using Programmer              : avrispv2
avrdude: Send: . [1b] . [01] . [00] . [01] . [0e] . [01] . [14]
avrdude: Recv: . [1b]
avrdude: Recv: . [01]
avrdude: Recv: . [00]
avrdude: Recv: . [01]
avrdude: Recv: . [0e]
avrdude: Recv: . [01]
avrdude: Recv: . [14]
avrdude: Send: . [1b] . [02] . [00] . [01] . [0e] . [01] . [17]
avrdude: Recv: . [1b]
avrdude: Recv: . [02]
avrdude: Recv: . [00]
avrdude: Recv: . [01]
avrdude: Recv: . [0e]
avrdude: Recv: . [01]
avrdude: Recv: . [17]
avrdude: Send: . [1b] . [03] . [00] . [01] . [0e] . [01] . [16]
avrdude: Recv: . [1b]
avrdude: Recv: . [03]
avrdude: Recv: . [00]
avrdude: Recv: . [01]
avrdude: Recv: . [0e]
avrdude: Recv: . [01]
avrdude: Recv: . [16]
avrdude: Send: . [1b] . [04] . [00] . [01] . [0e] . [01] . [11]
avrdude: Recv: . [1b]
avrdude: Recv: . [04]
avrdude: Recv: . [00]
avrdude: Recv: . [01]
avrdude: Recv: . [0e]
avrdude: Recv: . [01]
avrdude: Recv: . [11]
avrdude: Send: . [1b] . [05] . [00] . [01] . [0e] . [01] . [10]
avrdude: Recv: . [1b]
avrdude: Recv: . [05]
avrdude: Recv: . [00]
avrdude: Recv: . [01]
avrdude: Recv: . [0e]
avrdude: Recv: . [01]
avrdude: Recv: . [10]
avrdude: Send: . [1b] . [06] . [00] . [01] . [0e] . [01] . [13]
avrdude: Recv: . [1b]
avrdude: Recv: . [06]
avrdude: Recv: . [00]
avrdude: Recv: . [01]
avrdude: Recv: . [0e]
avrdude: Recv: . [01]
avrdude: Recv: . [13]
avrdude: Send: . [1b] . [07] . [00] . [01] . [0e] . [01] . [12]
avrdude: Recv: . [1b]
avrdude: Recv: . [07]
avrdude: Recv: . [00]
avrdude: Recv: . [01]
avrdude: Recv: . [0e]
avrdude: Recv: . [01]
avrdude: Recv: . [12]
avrdude: Send: . [1b] . [08] . [00] . [01] . [0e] . [01] . [1d]
avrdude: Recv: . [1b]
avrdude: Recv: . [00]
avrdude: Recv: . [01]
avrdude: Recv: . [0e]
avrdude: Recv: . [01]
avrdude: Recv: . [1d]
avrdude: Recv:
avrdude: stk500_2_ReceiveMessage(): timeout
avrdude: Send: . [1b] . [08] . [00] . [01] . [0e] . [01] . [1d]
avrdude: Recv: . [1b]
avrdude: Recv: . [00]
avrdude: Recv: . [01]
avrdude: Recv: . [0e]
avrdude: Recv: . [01]
avrdude: Recv: . [1d]
avrdude: Recv:
avrdude: stk500_2_ReceiveMessage(): timeout

Weiß jemand wieso der Vorgang abbricht und in einen Timeout läuft. Bin 
ziemlich neu auf dem Gebiet, jede Hilfe ist willkommen.

Liebe Grüße

Sonja