I am having the same issue, trying to upload a library to BimCloud and getting the "invalid file format" error message. However the library I'm trying to upload is 20 megs, so I doubt drive capacity is the issue. The file is from a furniture manufacturer and appears to have been made in 2016. Is it possible the library needs to be updated to Archicad 22 to work with our BimCloud Basic? I have no issues importing the .lcf into a project and using the content...it just won't upload to BimCloud.
Is there a process for upgrading a library container file from one version of Archicad to another?
Jeff
Jeff G
Archicad 27 USA (full), Macbook Pro (16-inch 2023, M3 MAX, 128 GB RAM)