I did the reinstall and it seems that has corrected that error.
After the re installation of DW I had to reinstate the extensions
which meant replacing configuration/shared/webassist/library/wa_preview.js which I think is OK
but I then found I had not made a copy of the folder: configuration/shared/webassist/library/preview
Would you please send a copy of this file to me.
In using Data Assist Pages I find that I cannot align the input field, as shown in image1.
Is there any help on how this can be done please?