I tried to regenerate all the sites on the development server.
These sites regenerated without event (other than taking a long time):
http://www.canadianmysteries.org/development/sites/gagnon/accueil/indexen.html
http://www.canadianmysteries.org/development/sites/jerome/accueil/indexen.html
http://www.canadianmysteries.org/development/sites/klatsassin/home/indexen.html
http://www.canadianmysteries.org/development/sites/klondike/home/indexen.html
http://www.canadianmysteries.org/development/sites/verigin/home/indexen.html
http://www.canadianmysteries.org/development/sites/robinson/home/indexen.html
http://www.canadianmysteries.org/development/sites/thomson/home/indexen.html

These sites regenerated, but at least one of the four stages reported problems:
http://www.canadianmysteries.org/development/sites/angelique/accueil/indexen.html
http://www.canadianmysteries.org/development/sites/donnellys/home/indexen.html
http://www.canadianmysteries.org/development/sites/redpath/home/indexen.html
http://www.canadianmysteries.org/development/sites/vinland/home/indexen.html

The main GUMICH site failed to regenerate entirely, but as Pat has been reworking those files manually, I don't think there's any issue there.

Reported to JL and MF. Awaiting their go-ahead to move the sites to the production account. Logged time for regenerating previously. I had forgotten to report results until now.