Using a DP610. and using many small windows to monitor a large vehicle.
All works well, but when I want to add another window, after I install the new enable signal, all the rest disappear. If I catch it soon enough I can back out and they reappear. But if I compile, they are lost.
I have programmed three previous DP610 and it has happened quite a few times.
After further study, I found that if I tried to change the order by "move to top" or by hitting it with my mouse and inadvertantly changing its size, however little, all signals disappear.
Again if I close it down without saving and then reopen all is well. Just don't allow it to auto save before that.
Bgtwuk