The AVG Antivirus software appears to have been recently updated (most-likely the morning of the 16th) and their update incorrectly identifies the Palette as a Trojan Horse. The Palette does not contain a Trojan Horse; it's just a bug in the antivirus software.

To ensure that the Palette does not contain a Trojan Horse, we had 19 antivirus scanners check the version currently online and none of them identified the Palette as a problem.

In order to get the Palette to work, you may have to disable your anti-virus software or tell it to ignore the Palette. We cannot do anything to fix the problem. Make sure you keep your anti-virus software up-to-date because they may release a fix.