Project appears almost blank after hours of work...

[mandicreally]

So I've spent a handful of hours on a new project between yesterday and today.  The project started to seem oddly slow, and I was having some weird keyboard input issues (like my 5 key was stuck down despite only seeming to happen in Fusion), so I saved everything, closed Fusion, and restarted my PC to just see if things cleared up.  

After the restart when I went to open the project (a couple hours later as I let things sit and worked elsewhere), the project is basically blank.  All my work APPEARS to be gone.  All that exists is a single line from one of the sketches.  It is so very confusing.  All of the Bodies/Sketches/Canvases are still visible on the menu, but when I cycle the visibility of them, they never reappear.  

So before I freaked out, I opened another Untitled project, disabled "Capture Design History" and copied the Bodies from the "blank" project to the new project.  Boom, the bodies appeared, but they were "clear" in a wireframe type view.  Odd behavior but whatever.  I was also able to copy the most important sketch over via this method.  So it seemed like somehow the original project just got corrupted in some weird way where the elements are still THERE but not visible no matter what I do.  

I tried starting to work on the "new" project, saving it under a different name, and decided to just see if the "wireframe view" thing would clear up with a restart of Fusion.  I saved, closed Fusion, and reopened it.  Now the NEW project has the exact same issue as the old one.  Magically in the restart of Fusion the bodies and sketch are not visible.  Only the weird single line.  I exported the project and tried opening the export and sure enough it shows the mostly "blank" project.  (Find it attached)

I don't know what is going on here. I'm at a total loss. I changed no settings, just saved and restarted Fusion both times.  I tried cycling a handful of view settings but none made any difference. It is looking like I may have to just start over I guess? I don't know, but I felt it best to post and figure this out if I can.  If for no other reason than to avoid this in the future.

[jeff_strater · Accepted solution]

There is nothing wrong with your model - it is all there.  The problem is that Sketch1 has a HUGE line in it:

I do not know how this line came to be, but the problem is that Fusion zooms to the entire model extent on open, so the "important stuff" of the model is reduced to a few pixels in the middle.  If you turn off this sketch, and zoom to fit, you can see that the model is OK.  Deleting this line makes the model work as you expect it to.  A repaired version is attached.

[mandicreally]

Thank you sooo much!  I've discovered a key on my keyboard is now dead.  I think it glitched out while I was editing that sketch and made a massive line.  I thought that might be the case and tried zooming in a bit but it seemed like I was getting nowhere and that was that.  Thank you for figuring it out, huge time saver!