OK managed to get all my problems sorted finally!
The cause of Essential to go into "Not Responding" was this;-
If you install it, either on HD or USB stick( happens with both) and import a wab file. then you later delete the .epm file, and try to go to Import from a replacement - different-wab file---then the window to select "Import CSV or WAB" is greyed out-thus stopping any further importation of any type. Worse -- the whole Application is locked up at this point.( Win 2K pro)
The quickest work-around I found was to " uninstall" Essential, then re-start PC, then re-install/load onto USB afresh.
Then, on opening Essential, you again get that first option to import from OE, and you can start again.
It seems that if you always keep at least ONE database in there the problem doesn't appear.
May not be a bug as such, but I hope you can see that anyone trying out Essential, who then decides to delete the INITIAL .epm database and continue with a nice new database will end up with Essential just locked up and Not responding messages?
Thanks for your help with the above all now works great. Ian. ( Island of Malta)