I can't install Displaylink Core Software as it says it's already installed, it's not

[billybonk]

Hello, can you please help me? I am running Windows XP, have been using Displaylink 6.1 for 2 years. I tried upgrading it to 7.0.4 a couple of days ago and the installation failed. It first uninstalled 6.1 and then it said it could not install 7.0.4 since the software was already installed.

I have used the Displaylink cleaner, I have cleaned the registry and hard drive, and tried all versions from 6.1 to 7.4 with no joy.

I attach the Diagnostics file where it says that the software is installed, when it's not! What can I do please?

=== Logging stopped: 28/04/2014 18:19:41 ===
MSI (c) (E0:A4) [18:19:41:984]: Note: 1: 1708
MSI (c) (E0:A4) [18:19:41:984]: Product: DisplayLink Core Software -- Installation failed.

MSI (c) (E0:A4) [18:19:41:984]: Windows Installer installed the product. Product Name: DisplayLink Core Software. Product Version: 7.0.43526.0. Product Language: 2057. Installation success or error status: 1603.

MSI (c) (E0:A4) [18:19:41:984]: Grabbed execution mutex.
MSI (c) (E0:A4) [18:19:41:984]: Cleaning up uninstalled install packages, if any exist
MSI (c) (E0:A4) [18:19:42:000]: MainEngineThread is returning 1603
=== Verbose logging stopped: 28/04/2014 18:19:42 ===