Old worksheets, new version

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Hi everyone,

I just did the most stupid thing; I was having problems running sage 5.2 because i was keeping my old .sage directory in my home folder, so I renamed it and let sage create a new one. My problem now is that I can't retrieve my old worksheets (I know, I should have saved them before deleting the old version). I have all the info that was in my old .sage directory, and I've copied all the sage_notebook.sagenb/home/admin contents to the corresponding new directory, but with this I only see the titles of the worksheets on the notebook; when I click on any of them I get a blank page instead of the worksheet... any ideas?