Since version 8.0 I encounter internal server error in the Sage Notebook when I try to read data files in "Data..." menu (worksheets were written and data files uploaded with older versions; fortunately, I still have version 7.6, so I can acess and work with data files).
I also encounter internal server error on publishing worksheets: worksheet is published, but "500: internal server error" message appears (so it is at least annoying).
I am using Sage binaries on 32 and 64 bits machines with Ubuntu Linux (sage-8.0/1/2-Ubuntu_16.04-i686.tar.bz2 and sage-8.0/1/2-Ubuntu_16.04-x86_64.tar.bz2). I also compiled 8.0 and 8.1 from sources. (With 8.2 there are problems with ncurses, but this is another story.) Sincerely, KF
