I received an email tonight asking about a Windows Live Writer issue and BlogCFC.  My response was sure it works, just pick MetawebLog API and rock on.  Strangely I received another email saying it was giving an error.  Mine was working just fine but I was running an older version.  Downloaded the latest version and was able to open/edit my existing blog without any issues.

I then tried adding a new blog (same blog actually) and when I went to open the posts, it gave me an error - the Content is not allowed in prolog.  I knew the old settings for Windows Live Writer worked so maybe I could export the settings it was something that changed with new accounts.  Turns out, like all good windows programs, the account settings are buried in the registry and stored using GUIDs. 

Comparing the working settings with the new, non-working settings reveled a few minor changes.  One of these changes was under manifestOptions called characterSet.  That setting didn't exist under the working account so I deleted it from the non-working one.  Fired up WLW and it worked. 

The Fix

Open regedit

Click on Edit - Find
enter Windows Live Writer
expand Weblogs
should be IDs - expand those out
find your blog and goto manifestOptions
delete the characterSet key

Restart Windows Live Writer.

Very weird!