Error 1603, 1638

Error 1603 or 1638 occur if you accidentally start the installer more than one time, which results in more than one IDriver.exe process under your Windows Task Manager.

If the problem persists, cancel the installation and perform the following operation:

Properly register the file msiexec.exe by using the following command line:

<WINDOWSFOLDER>\System32\msiexec.exe /REGSERVER 

You can enter the command line in the Windows Start | Run dialog, after replacing <WINDOWSFOLDER> with the location of the Windows folder.