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Old extensions

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Can I somehow use my old extensions in archicad 21? Some company have their own product-specific extensions, but only for ac19, ac20, is there any possibility?

Karl Ottenstein
I assume you mean "add-ons"? All add-ons have to be built (compiled) specifically for each version of AC, as they utilize a variety of common information. So, you cannot simply copy an add-on from AC 20 to AC 21 and expect it to run. The developer would have to recompile it for AC 21.
One of the forum moderators   •   AC 25 USA and earlier   •   MacOS 11.6.6, iMac Pro

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