yet another failed KMail2 migration

OK, my fully-workable KDE 4.6.5 KMail doesn't import into KMail2 on KDE 
4.10. I copied all the right files into place, ran kmail-migrator and had 
no errors reported. I opened KMail and though it sees my folder structure, 
it doesn't show any emails in the folders. A popup message says "resource 
kmail folders is broken" and stopping akonadi and then restarting it shows 
a bunch of these:

akonadi_mixedmaildir_resource_0(6653)/akonadiresource (maildir): "User 
canceled operation. (Folder /home/jerome/Mail/Avra does not seem to be a 
valid email folder)" 
akonadi_mixedmaildir_resource_0(6653)/akonadiresource (maildir): "Folder 
/home/jerome/Mail/Avra does not seem to be a valid email folder" 
collection: Collection ID: 48    remote ID: "sent-mail" 
   name: "sent-mail" 
   url: KUrl("akonadi://?collection=48") 
   parent: 17 "Avra" 
   resource: "akonadi_mixedmaildir_resource_0" 
   rights: QFlags(0x1|0x2|0x4|0x8|0x10|0x20) 
   contents mime type: ("message/rfc822", "inode/directory") 
   isVirtual: false 
    CachePolicy:  
   inherit: true 
   interval: -1 
   timeout: 1 
   sync on demand: true 
   local parts: ("ENVELOPE") 
    CollectionStatistics: 
   count: -1 
   unread count: -1 
   size: -1

That's funny, they were valid for KMail1. Nothing I find in Google tells me 
how to deal with either of these situations.

So what do I do now?
_______________________________________________
KDE PIM users mailing list
Subscription management: https://mail.kde.org/mailman/listinfo/kdepim-users