Hello guys
Sorry about the confusion here. It is possible to post using Canadian dollars with the current lister but there is a glitch as you have noted. To post with the current version you need to:
1) Open the lister and set Canada as your site.
2) Switch the currency to US$.
3) Switch the currency back to Canadian.
The listing will then post with Canadian currency enabled. Sorry about the mixup. This has been fixed internally and once it passes QA will go out to the live site.
I apologize again for the inconvenience.
Auctiva Jim