avrdude timeout issue on 64 bit linux

[zakerny]

When attempting to flash firmware with kkMulticopterFlashTool v 0.77 beta under 64 bit linux, the following message occurs throughout flashing and verification process:
avrdude: stk500v2_ReceiveMessage(): timeout

This results in a mismatch error upon completion of flash and verification.

The system in question is Ubuntu LTS 12.04, 64 bit. Afrousb programmer used, but issue also occurs with sparkfun pocket programmer (tinyusb based).

The same system runs 64 bit windows 7 professional through virtualbox on the ubuntu system, and successfully flashes and reads the firmware. The virtual box runs the 32 bit version of kkmcft, and 32 bit oracle java jre.

Thank you!