Library conversion failed

Hello, just did a re-install on both of my macs laptop and desktop. Both now to Mac os Sequoia. I have my rekordbox libray stored on an external hardrive. I cam from rekordbox 6.8. Now both computers have rekordbox 7, the latest which you can download. When i open rekordbox i get a warning "library conversion failed" 
I can work but indexing is extremelt slow. 
I hope anyone can help me.

Thanks