Clio programming

Hi there to all forum members.

I recently bought a Clio to play with. I’m having some issues when I try to program it.
Steps I followed are exactly as in the Wiki and the excellent article posted by toonpt

Yet, I’m not able to program it correctly.

The environment is setup as follows:
Old Windows XP machine (machine is only 1 year old, XP is old)
Arduino 1.0.5-r2 IDE
Blink example sketch
Seeeduino Clio connected via USB, no battery fitted.
Seeeduino Clio driver installed (two times, for sketch and bootloader mode)
Arduino IDE configured for Arduino Leonardo and AVRISP mkII programmer

When I try to upload the Blink sketch to the Clio, after the build is done, I can see the left white led of the Clio “breathing” (fading slowly on and off) for a few seconds, it coincides with the following log extract:

PORTS {COM14, } / {COM14, } => {} PORTS {COM14, } / {COM14, } => {} PORTS {COM14, } / {COM14, } => {} PORTS {COM14, } / {COM14, } => {} PORTS {COM14, } / {COM14, COM15, } => {COM15, } Found Leonardo upload port: COM15

When this is happening I can see that the Clio switches from port COM14 (as configured when plugged in) to COM15, the programming mode. I can also see avrdude being called.

avrdude: Version 5.11, compiled on Sep 2 2011 at 19:38:36 Copyright (c) 2000-2005 Brian Dean, Copyright (c) 2007-2009 Joerg Wunsch

Issue is that the Clio promtly stops the breathing pattern, the communication led blinks red a couple times, the Clio goes back to COM14 (the sketch running port) and avrdude throws the below error:

avrdude: ser_open(): can't open device "\\.\COM15": The system cannot find the file specified.

Which is perfectly understandable as the Clio is already since a few seconds back on COM14.

As I don’t have any other log visible… It’s hard for me to tell what is actually going on and any help would be appreciated.
Other small point, in the Clio Wiki it is mentioned to setup the IDE for the Seeeduino Clio board… I wonder which version of the IDE has this board included…

Thanks a lot,