If you are using WordPress and Windows Live Writer together and you are having problems, maybe these solutions from WordPress.org can help you.
- Image uploading fails
- Posting fails for some blogs that don’t use UTF-8, ISO-8859-1, or US-ASCII encodings
- Bad Behavior plugin doesn’t like Windows Live Writer
- Invalid response from blogger.getUsersBlog
- Non-ASCII characters render incorrectly on UTF-8 encoded blogs
- ArgumentOutOfRangeException while attempting to open posts from WordPress blogs
