Sorry about that experience Marie. This is still a bug that we haven't been able to track down unfortunately. It manifests very rarely. However, I've taken steps for our upcoming v17 that will probably prevent this from happening in the future.
Thanks for informing that you still have this problem and that it happened related to jAlbum stopping earlier. To quickly access your jAlbum projects, use the new project gallery (File->Project Gallery) and switch the source to "My Albums", then all projects under "My Albums" should show up for easy access.
Just had this happen to me - was using jAlbum earlier this evening - closed it - reopened it now and there are no recent projects (I know this is not a big problem - but thought you ought to know it is still happening).
I have used jAlbum for many years and this is the first time, I think, that it has happened to me.