The "plural" name for ID_KE was wrong in idcode.c (bke), not matching the MainCollectionDef one used in rna_main.c. Checked the others too, everything seems ok now.
The "plural" name for ID_KE was wrong in idcode.c (bke), not matching the MainCollectionDef one used in rna_main.c. Checked the others too, everything seems ok now.