https://community.graphisoft.com/t5/Project-data-BIM/Long-term-support-for-ArchiCAD-9/m-p/58878#M2567 I have on my MacBookPro AC11, AC10, AC9, and AC7 installed. They all run well, but all but AC11 are used only to access older projects. AC7 is said to open back to version 4.5 which is almost as long ago as I've been using the program.<BR /> <BR /> I guess they will all run well as long as MacOSX runs old programs. I see no reason why they shouldn't. My old MacOS 7 programs ran fine in MacOS9.<BR /> <BR /> Of course, it would be better if the current version could open all old versions, but I can live with this. Hard diskspace is cheap these days. I'd rather GS concentrates on making progress. Thu, 11 Oct 2007 20:03:40 GMT Thomas Holm 2007-10-11T20:03:40Z https://community.graphisoft.com/t5/Project-data-BIM/Long-term-support-for-ArchiCAD-9/m-p/58877#M2566 <DIV class="actalk-migrated-content"><T>I just reinstalled AC9 on my computer (we currently use AC11) because I needed to open an old project that was created in 2000-2001 using AC6.5.<BR /> <BR /> This makes me wonder: How long will I be able to use AC9 in order to open these old files? Will it be unable to run under future operating systems? Is Graphisoft aware of the need to keep AC9 around long term?</T></DIV> Thu, 11 Oct 2007 19:24:32 GMT https://community.graphisoft.com/t5/Project-data-BIM/Long-term-support-for-ArchiCAD-9/m-p/58877#M2566 R Muller 2007-10-11T19:24:32Z https://community.graphisoft.com/t5/Project-data-BIM/Long-term-support-for-ArchiCAD-9/m-p/58878#M2567 I have on my MacBookPro AC11, AC10, AC9, and AC7 installed. They all run well, but all but AC11 are used only to access older projects. AC7 is said to open back to version 4.5 which is almost as long ago as I've been using the program.<BR /> <BR /> I guess they will all run well as long as MacOSX runs old programs. I see no reason why they shouldn't. My old MacOS 7 programs ran fine in MacOS9.<BR /> <BR /> Of course, it would be better if the current version could open all old versions, but I can live with this. Hard diskspace is cheap these days. I'd rather GS concentrates on making progress. Thu, 11 Oct 2007 20:03:40 GMT https://community.graphisoft.com/t5/Project-data-BIM/Long-term-support-for-ArchiCAD-9/m-p/58878#M2567 Thomas Holm 2007-10-11T20:03:40Z