Go into Add/Remove Programs and delete all OS's you have installed on your PC.
Install the new OS to your PC again.
Reboot your PC
Delete the vendor.xml file
Then try loading with Loader.exe
The difference between stupidity and genius is that genius has its limits.
When you take things for granted, the things you are granted, get taken.
Even a mosquito doesn't get a pat on the back until it starts to work.
Too many people miss the silver lining because they're expecting gold.
[BES 5.0.3 / GroupWise 2012 HP2]