I use inkscape version 0.92.2 on a mac OS sierra 10.12.5.

I am working on a file with a lot of objects and suddenly many of them have disappeared, in an apparently random way. For instance, of 68 numbers, each one a separate object, two disappeared a few days ago and now only eight remain. It is not only text objects that are affected. Earlier today I moved a group of objects; it looked fine and I saved the file but when I opened it half an hour later the whole group had vanished.

I have clicked 'select all objects' and there is no dotted box indicating that they still exist. A similar inkscape file has suffered similar losses. I haven't noticed any similar problems with other programmes, like gimp.

Is it possible that these objects are still there but invisible, and if so how can I make them visible again? Or is this a known problem, and if so is there a way I can protect against it? I'd be very grateful for any help

Could it be this bug?
https://bugs.launchpad.net/inkscape/+bug/168636

Moving objects through hidden layers make objekcts disasppear...

I don't know if that bug is the op's problem. But I've just posted to the bug that I have that same problem, and also subscribed to it. I've been having that problem for some time, but thought it was something I was doing wrong. Geez!

lemonphenomenon, can you share that file with us? Or some file like it? We might be able to find the missing things. Be sure to describe what's missing, so we know what to look for.

Grobe - Thanks for your suggestion. It might be that bug, although as far as I know there are no layers, hidden or otherwise, in the file, just objects. On the other hand I think I read somewhere that layers in inkscape are really just groups of objects, so who knows? Not me. I'm out of my depth.
I saw after making my post that the files' thumbnails said 'this page contains the following errors: error on line xyz at column 36: Encoding error'. The affected files all originated as copies of the first affected file, so I'm hoping it's a one-off blip that I unknowingly passed on to other files. Other inkscape files not copied from the first faulty file haven't been affected, as far as I can see.

Brynn - Yes, here's one of the problem files. You see there are a few numbers - all the other numbers up to 67 were there originally, and all the sections of the snaky line were coloured white, green, yellow or red, not just a few. The blue rectangular background was complete. There was some text outside the blue rectangle but I can't remember how much. It's all stuff I can redo - I just don't want it to disappear again! I'm starting again from scratch and will post again to say what happens.

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