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Many of my students have Mathematica notebooks that they cannot open. I think that it's for the same reason identified in the other post with this title from July 2014. If you open a file, DON'T SAVE IT AS ANYTHING, do stuff, click X, then AFTER prompted "Save changes to "Untitled-1"?" you click save and name it; you will not be able to open it again.

My question is, now that it's 15 months later, has anyone figured out how to open those notebooks?

Note, I've tried the same procedure above in Mathematica 9, and the files open fine, so that bug was introduced in Mathematica 10.

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  • $\begingroup$ The bugs tag is "reserved for questions where the problem has been vetted by this community and the observed behavior is confirmed to be a bug". Please don't add the tag to your own post until it has been vetted. (The previous post does not have the bugs tag, so it doesn't belong here until the community has decided that it is necessary.) $\endgroup$
    – march
    Oct 20, 2015 at 21:17
  • $\begingroup$ Can't reproduce it on Win7 V10.3 and I've never faced it before. The existence of "Enable Dynamic" button when you don't have written Dynamics yourself is possible, the fact the button doesn't work seems strange. $\endgroup$
    – Kuba
    Oct 21, 2015 at 6:42
  • $\begingroup$ Do you have examples of such bad notebooks that you can show? Maybe someone can figure out what's wrong with them then. $\endgroup$
    – Szabolcs
    Oct 21, 2015 at 8:09
  • $\begingroup$ I've replicated this problem on several computers, all running Mathematica 10.0, some on Win7 and some on Win8. I have confirmed that it doesn't happen with Mathematica 10.3, so something must have been done to fix the issue. However, Mathematica 10.3 will not open one of these corrupted notebooks. I'm hoping that there is a way to open them, because some of my students cannot open any of the notebooks that they've used all semester. $\endgroup$
    – Joe
    Oct 21, 2015 at 10:07
  • $\begingroup$ @Szabolcs, I don't know how to attach a file to this site, but if that's possible, I have one to attach. $\endgroup$
    – Joe
    Oct 21, 2015 at 10:11

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