In the past I have created the templates for my clients using the title tag for both webversion and unsubscribe along with default text.
For example, I would code the webversion similar to <$title default='Click here for a web version of this email'$>.
This would allow my clients to change the default text if they would like.
Since the upgrade the default text is not recognized as being content so when you try to upload the template it says there's nothing between the <webversion> </webversion> tags.
Is this something that may be back or does someone know a work-around.
It's not a huge deal but I do have clients that alter that text occasionally.
We've tested the web version tag, and you should still be able to do that fine. Can you <a href="http://www.campaignmonitor.com/contact/">contact support</a> and give us your exact code?