[Thomas Holm]

I opened this small project, which I worked in and saved last time three weeks ago.

AFAIK, I have not opened, moved or done anything else with it since.

When I open it, I get the Missing Object dialog (see attachment).

W T F?

[JaredBanks]

I had a similar situation in v14 back in early 2011. I'm still a little baffled by how or why it happened. But I figure out where the problem was and how to get rid of it. I wrote a blog post about it:

http://www.shoegnome.com/2011/03/06/high-low-you-backed-up-right/

Hope it helps.

[Thomas Holm]

Thanks Jared!
You've got an interesting blog there!
I think you're right, I might have renamed something without thinking. Alzheimer light, you know.
But I think the commenter is right - Archicad should find the erroneous item for you in cases like this. So easy for Graphisoft, so hard for us users!

[JaredBanks]

I agree completely. If ArchiCAD is already smart enough to know that there's an attribute missing, how hard is it for ArchiCAD to show us WHERE? Or just fix it.

Glad you like the blog!

[juditboros]

Dear Thomas Holm and Jared Banks and other users who had similar issues:

Today an article was created on ArchiCAD WIKI: http://www.archicadwiki.com/MissingObjectsAndMissingAttributes

I hope you will find this solution useful.

Thank you for the tips and I hope it is no problem that I mentioned your names in the article:)

Have a great day!