I have a Azteeg X3 controller with Marlin firmware on it and would like to change it to Repetier. The problem I have is that everytime I try and upload the firmware it times out. There are no errors compiling just stalls uploading. I can connect to the printer thru Repetier Host and it works fine so I don't think it is a connectivity issue or driver problem. I have tried Arduino IDE versions 1.0, 1.03, 1.05, 1.06 and all the same results. Any ideas?