My customer has sent me a solidworks assembly step file. I'm able to open and converted/save it as a solidworks file. It open 's fine and I can see all the part listed. But once I save it and try to reopen it/them, all the part(s) listed in the feature tree are suppressed and missing. Not sure what going on.
Sorry but that did not work. Here how I'm trying to open them.
Open the assembly step file via the open command. The step file goes thru the conversion process OK, and I can even see and open the individual part files via the feature tree.
But when I save either the top level assembly or just the individual parts files and try to reopen them no luck. I get this error message which doesn't tell me a lot, 
and a blank picture with all the parts missing.
I get the same message and issue if I try to just open a listed part file. Any ideals?
Could you attach your file?
..seems like save is not saving?.. when you save, can you see the sldprt's/asm's in the folder?.. maybe file read permissions over the network?
..as a workaround.. save as Parasolid.. and reopen/import the Parasolid.. and save,.. are the files sldprt's/asm's in the folder ?... can you reopen it with all the components now?
This 3D Interconnect setting has caused much confusion at my company. I generally just tell them to un-check it and go about their business as they've always done.
My image shows it in the Unchecked condition.
In my opinion, this should have been the Default (not enabled) when they added this functionality.
Make sure when you do the save you choose "save all" and be very sure the folder is not in a temporary location. Next check the folder properties you are saving in to be sure the "read only" flag is not set and you have the proper rights.
Last but not least, I had a similar issue some time ago and my VAR found my part template had been corrupted. Luckily we had PDM so I rolled back the last version and everything started working. You can try using the generic template that comes with SWX to see if it starts working.
Good Luck,
Steve
Sorry but I tried all of the requirement fixes and it still doesn't seem to work. Is their some kind of setting, during the step file creation process, that controls your ability to open/convert & save the output step files; So you can open it once but not be able to save it and reopen it? This is a issues I have never seen before but thought I had read once that you can control the step access right when their created. But I'm not sure if i'm remembering this right.
Steven Dod had the same issue I ran into. My default part template must be corrupted, as the original Solidworks templates saved the files and reopened fine.
When you open it, break the reference....that's all.