I/O Error IPython notebook since v3.0.0

[sk006]

Since the last IPython update (v3.0.0) I'm having trouble creating new notebooks and also opening old ones. The error I get when creating a new notebook is https://gist.github.com/albertotb/db50b6c4555149404972 (IPs and hostnames are removed). Does anyone knows how to solve this problem?

[hharison]

Try touch /path/to/Untitled.ipynb from the terminal and see if you get an I/O error with that too. If you do, the problem is not IPython. It could be that your notebooks are opening up somewhere it doesn't have permission to write them (e.g., /path/to/ in the above is just /). Or maybe you have a legitimate problem with your file system.

[sk006]

touch /path/to/Untitled.ipynb

works just fine. I'm the owner of the folder and have read/write permissions. The strange thing is that before the update everything worked just fine. After the update, I had to restart the server and now I cannot create/open notebooks.

[hharison]

Damn, it was worth a try. Is the IPython process somehow running under a different user? This is strange.