This device works fine with avrdude 5.10 but when I try to use it with avrdude 6.0.1 it fails. The same command line is used for both versions.
Here is a partial list of the errors received.
C:\>avrdude -c avrispmkii -p t2313 avrdude: stk500v2_recv_mk2: error in USB receive avrdude: stk500v2_recv_mk2: error in USB receive avrdude: stk500v2_recv_mk2: error in USB receive avrdude: stk500v2_recv_mk2: error in USB receive avrdude: stk500v2_recv_mk2: error in USB receive avrdude: stk500v2_recv_mk2: error in USB receive avrdude: stk500v2_getsync(): timeout communicating with programmer
Edit: I am using the avrdude Windows binaries dated September 18, 2013