newbie help: "Unknown document version 25.0" and "Cannot read plan file"

[Antz]

Hello! I am a total newbie and sincere apologies for posting this.

I'm just going through the first modules of the beginners course. I downloaded sample projects so I can practise navigation (https://community.graphisoft.com/t5/Let-s-get-started/Archicad-Sample-Projects/ta-p/304186#), however I couldn't open them.

The error is "Unknown document version 25.0" and "Cannot read plan file". I am using a MacOS BigSur with the latest Archicad.

Sorry for the bother again, I'm not even sure if this is the right forum. Any help is appreciated! 

[Noemi Balogh]

Hi Antz,

Welcome here!

Could you please check and take a screenshot of what you see when opening the project?

I'm curious about this:

Please share this with us, so hopefully we can help you better.

Thanks,
Noémi

[Eduardo Rolon]

Looks like you are trying to open a file made with the current version of Archicad (25) with a previous version.

Solution is to download AC25.

Alternate solution to get another user in your office to open in 25 and save as the previous version (24).

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I also move your post to SetUp and License.