We have had 2 people within a week getting quite alarmed by the errors thrown by Toaster while importing recipe information from the layer index. Scaring people like this even before they have seen Toaster proper is not good, so we maybe should hide the importing errors.
As far as I can see, these patch series https://lists.yoctoproject.org/pipermail/toaster/2016-July/004962.html fixes this issue. So setting to in progress review.
http://git.yoctoproject.org/cgit/cgit.cgi/poky-contrib/commit/?id=8b3146007f98ba6618662cc47ed1c1491ef8945a