That fixed it. It had been my practice when editing "form function" to check "send the form contents in an email" than click the envelope above it than click "from" in the next window which allowed me to easily require both name and email address. When trying to do just that DW crashed out every time. After the fifth attempt I chose to forgo the envelope and click the dynamic connection next to the from region and obviously made the wrong choice there. Fortunately I was able to grab code from a previously created form.
I really find it hard to believe that I'm one of only a few with these problems.