Logging in again shouldn't help. Is this happening after you click on the Search link that's in the list of links at the top the page? Or when you click on the Search button next to the text box?
The search button next to the textbox.
When you get the dispatch table error, what's in the browser's address box?
Once again search is playing silly beggars with me. No matter what I search for I only get results from 'The Bible: Accuracy and Inerrancy' forums. This is the case whether I use the quick or advanced search options.