This is generally caused when you are attempting to run the installer without first "unzipping" the file you downloaded.

Please "unzip" your installation file before running setup.exe.

Please try running the installer/application with administrative privileges.

To do this simply right-click on the installer/application and select "Run as administrator".

Please ensure that your user account is set as an Administrator account.

Check this within the Control Panel -> User Accounts.

Most commonly this problem has something to do with your firewall settings.

Sometimes people unknowingly have 2 firewalls installed on their computers, the one installed
by Microsoft as part of the operating system and a third party one which is installed by them.

Both of these firewalls will need to be configured to allow the software to finish the registration process.

Please ensure that within iTunes you turn on the "Enable Disk Use" option within iPod options.

This is because iTunes recently changed the format of the iPod internal database.

As a result a new version of all of our software was released to deal with the update.

If you are experiencing this problem, please download and install the latest version
of the product by clicking here.

Generally this occurs when synchronization is enabled within iTunes. iTunes assumes that if the music on your iPod cannot be found on your computer, you are no longer interested in listening to it. It then proceeds to delete these songs off your iPod.

Resolution:
1. Right click on iPod within iTunes, select "iPod Options...".
2. Under the Music Tab, select "Manually manage songs and playlists".

Note:
The iPod Shuffle does not have this option. The only way to retain music is not to run iTunes while your Shuffle is connected to your computer.