delete winfilecache file
Thanks Eric for posting that tip. This is the second time I have had to delete this file in the past few months. Have not needed to worry about that since the old Ultra Dev days. Now with DW CS4 I find this version nowhere near as stable as previous versions with sudden intermittent crashes and issues with this winfilecachexxx.dat file.
Yesterday I spent many hrs getting familiar with CSS FB and built several forms - no probs. Then this morning it crashed after I worked on a new form. Uninsall/reinstall the Extn didnt fix it and I breathed a sigh of relief when I turned up this post.