When you start a new production in Videowave and do quite a bit of work on it you should save it before it gets too large
as a dmsm file to a folder of your choice that contains ALL of the photos, music, videos etc. all in the same folder.
If it stops for some reason and you want to continue working on it later, go to the folder where you save the original
and right click on it and open with videowave as your option. I when I do this I usually look for the "DAT" file associated
with my particular production (which will have been saved in that same folder) and delete it. Now when you open
up the last saved production it will automatically re-establish a new DAT file. that original production you save will
never go away (unless you deliberitly delete it) and should be used where you last saved it.