Ok, I have a bit of an update.
I really checked the code on the page, and I found an entire block of code that appeared to be calling the old database Search that is no longer supposed to be used with Data Assist. I deleted that block of code and was able to update the server behaviour.
so the good news is, the insert / search / results page are working mostly.
the last glitch I need to workout is that when I insert a new record, the insert page is reloading rather than redirecting to the results page. I have checked the code and it appears to be formatted properly. Any ideas what could cause this?
Also, for some reason I have WADbSearch directory. Is this part of DataAssist or should it be deleted?