Hi Crusoe, thanks for reporting these file dialog problems!

For the next beta I have switched export so that it starts out with a blank name. I figure that this is better than starting out with the current file name since export is for writing out only some partial bits of a file, and having the current file name in there by default just makes it too easy to replace the full file with only a piece of it which you don't normally want.

I've also fixed up Save As so that if you have used some other format, the file name is initialized to that file extension properly (like in your example foo.obj) instead of always starting with .3dm .

And Import/Export will use the proper titles on their file dialogs.

Thanks!

- Michael