I' also have get the same errors when trying to upload a sketch under 32bit Vista (french edition), but I found a solution. 1. Open Windows Explorer. 2. Locate arduino.exe 3. Right click arduino.exe and click the Properties option. 4. Select the Compatibility tab. 5. Select the Run This Program in Compatibility Mode option. 6. From the drop-down list, choose the operating system you ran before upgrading to Vista, (Windows XP SP2 in my case). 7. If necessary, select the option to run the program as an administration. (Not necessary on my computer) 8. Click OK.This method is available for a lot of executables created for Win XP.