Install and/or Upgrade error: Error 1327.Invalid Drive: (4339517)

When trying to install or upgradeLiteSpeed you may experience the following error:

Error 1327.Invalid Drive: n:\

(the n letter is for example only, it is usually network drive letter)

Some parameters in your profile point to drives that no longer exist or have been remapped. Most oftenyou will get this while using roaming profiles as your home directory will be mapped to a network location.

Please read the different reasons and step-by-step fix for the install shield issue:

http://consumer.installshield.com/kb.asp?id=Q110636

1. If drive letters have been changed on your computer, re-assign the original letter to the CD-ROM, DVD-ROM, or operating system drive

2. Verify that registry entries do not contain invalid drive letters that might be causing this error:

3. Another suggestion, although not a long-term solution, would be to create a partition on the local hard drive or map a network drive with the drive letter that is mentioned in the invalid drive error.

4. Verify that the values underHKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Foldersuse valid drive letters.

For additional information you may also refer to :

http://support.microsoft.com/kb/101507

http://support.installshield.com/kb/view.asp?articleid=q107033