I have installed fricas (compiling from source) and also jupyter, then I installed fricas_jupyter following the instructions at https://github.com/nilqed/fricas_jupyter
But I can't get it all to work. I can open up a jupyter notebook, then choose a new fricas session, but when I attempt to execute a command, the terminal in which I entered "jupyter notebook" fills up with an unending repetition of this error: debugger invoked on a TYPE-ERROR in thread #<THREAD "main thread" RUNNING {1004EB61B3}>: The value NIL is not of type (OR (AND SYMBOL (NOT NULL)) RESTART) Type HELP for debugger help, or (SB-EXT:EXIT) to exit from SBCL. restarts (invokable by number or by possibly-abbreviated name): 0: [ABORT] Reduce debugger level (to debug level 1). (INVOKE-RESTART NIL) [more,optional] 0[2] 0] Can anybody advise me what's going on here, and how I can get it all working? -- [image: http://www.facebook.com/alasdairmcandrew] [image: https://twitter.com/amca01] <https://twitter.com/amca01> <https://www.linkedin.com/in/alasdair-mcandrew-108178a> <https://plus.google.com/+AlasdairMcAndrew/posts> -- You received this message because you are subscribed to the Google Groups "FriCAS - computer algebra system" group. To unsubscribe from this group and stop receiving emails from it, send an email to fricas-devel+unsubscr...@googlegroups.com. To post to this group, send email to fricas-devel@googlegroups.com. Visit this group at https://groups.google.com/group/fricas-devel. For more options, visit https://groups.google.com/d/optout.