I just upgraded the system to version 4.6.2 of DotNetNuke. I also upgraded the blog, forum, and events modules (blog is the only one currently in use) to the latest versions. Let me know if there are any problems.
The blog module spontaneously stopped working a couple of days ago, throwing errors about "The server tag is not well formed." when trying to add a new blog entry. I hadn't made any changes or anything and it had just suddenly stopped working. An entry in the DotNetNuke Forums showed me the fix. I applied it and am now able to post this entry.