Installing from DVD please check the DVD for fingerprints or in worst case scratches. If you get the same error message after cleaning the DVD, than the DVD could be damaged, but this is extremely rare. Please cancel in any case the installation, restart the computer and try again. Don´t be successfull pease contact the IKARUS sales team.
If you try to install a downloaded flight simulator, the download itself could be corrupted. Please delete the previous aerofly installation files and start the download installer again