When populating a MagmaCollection I got error with index, because I used the wrong selector for the index. I fix that, then I start to get "class definition unknow" error message, then my whole data is unaccessible (lost), then from the server I stop and restrat (even restarting Squeak), and now each time I start the Magma server I got the two following messages (capture here).
I am sure I do a lot of mistake when using Magma, but now I start to get anxious with it.
Hilaire