Read the instructions again ...
On Windows, the ArtlantisR-Studio_Out.apx file goes into the AddOns, the CAtl.dll goes into Archicad folder.
On the Mac, the ArtlantisR-Studio_Out goes to AddOns, the CATL.framework into the Support folder.
You did not put the CAtl in the correct place ...
Djordje
ArchiCAD since 4.55 ... 1995
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