@raspberry
Da es zu Zeiten von ARCHICAD 8.1 Windows 7 noch nicht gab, ist die Version auch nicht für Windows 7 freigegeben.
Schau mal, ob Dir dieser Link vielleicht weiterhilft.
Hinweise zu Windows 7 Kompatibilität auf ArchiCAD Wiki Die Hinweise zur Problemlösung gehen allerdings nur bis ARCHICAD 9:
ArchiCAD 9 on Windows 7
ArchiCAD 9 is Windows XP compatible. Windows 7 Professional and Ultimate editions (but not the starter and Home Premium editions) provide "Windows XP Mode" for legacy software.
However, the ArchiCAD 9 installer will not work on Windows 7. The following steps need to be completed to install:
1. Uninstall the Java environment
2. Run ArchiCAD installer, and select "Custom" install option
3. Exclude "GS Shell Extension" component from installation
4. Run the installer
5. Reboot system
6. Re-install the latest Java environemt
7.
Update the WIBU-driver (Download driver from here)
Also read comments on Windows Vista Most of the issues reported there apply to Windows 7 as well.
Grüße
Evelyn
Graphisoft Germany
Education Manager D/AT