Have you seen this topic, @bettya ? It looks very similar to your error, and might help get you on the right track before @Adam_Rivers gets a chance to look your question over. The 
search tool is mighty mighty! 
Side note - if you ever find yourself posting a question about an error message with a debugging logfile, please consider sharing that file's contents in your post. They're often useful in figuring out what's going on. 