I have been just doing this assembly then all parts disappeared, but when you open each part individually it is there.
My first time to post a discussion, waiting for answers . Thanks!
I think I found the problem. It looks as though when you've created the assembly the parts are located a long way from each other and so when you Zoom To Fit then because SolidWorks has to zoom out so far it looks as they disappear! If you Suppress the last 3 parts in the assembly tree and then zoom to fit then you should see the first two parts on the screen.
The easiest way of recovering from here (or the way I would do it) is to simply copy another instance of the part which is suppressed into the assembly (hold CTRL and drag from the tree onto the screen) and then mate this to the two parts already shown. Repeat for the other two suppressed parts and then delete the the original parts from the tree (the ones which should still be suppressed.
See how this goes, if you need me to do it for you then let me know!
Seems that the mating messed the assembly so it went too far off the screen. Problem solved
Retrieving data ...