'Windows cannot find TrueUpdate.exe' error shown during program update

The file TrueUpdateClient.exe is used by Xara during the update process and should be present within your Xara program installation folder.  Security software can be known to block execution of this file and move it to quarantine. 

Please check your security software, adding an exception if necessary to prevent TrueUpdate.exe from being blocked/quarantined and then retry your update.