This application requires the .NET Framework 3.5 or better in order to work. Since the 3.5 version of the .NET Framework does not currently work on Crossover, the installation for Logos 4 cannot proceed. Nonetheless, the installer will begin. In order for one to begin the install, you must edit the msi installer file so that it does not perform the multi user check. Otherwise, the installer will fail first complaining that it cannot be installed in a multi-user environment.