Archicad only allows "back-saving" one version at a time. To move a file from Archicad 28 to this version (v26), you must first save it as v27, then open v27 and save it as v26. Libraries:
Files created in later versions (e.g., Archicad 27 or 28) must be saved back specifically to version 26 format to be opened by this installer's version.
Archicad-26-int-3001-1.1.exe [HD 2026]
Archicad only allows "back-saving" one version at a time. To move a file from Archicad 28 to this version (v26), you must first save it as v27, then open v27 and save it as v26. Libraries:
Files created in later versions (e.g., Archicad 27 or 28) must be saved back specifically to version 26 format to be opened by this installer's version. Archicad-26-int-3001-1.1.exe