I sent out an email …
I sent out an email to everyone a little earlier today, with instructions on how to work around the problems in selecting files to load into the LKB that recently affect some of you (but, weirdly, not everyone). Please make sure you have received this message, which is the first time we use the mailing list for this class; in case you are enrolled in the class but did not receive email from me today, please let me know.
I also noticed there was a typo in the exercise, near the end, about how to submit your work. Since we are now working on problem set (2b), the command-line incantation for packing up and delivering your work to us should be: submit exercise2b.
Finally, the current problem set deliberately throws you out 'into the deep end' (of the swimming pool, I believe the metaphor goes), i.e. we ask you to work with the new TDL language, unification grammar, and LKB debugging support already before we have formally introduced everything there is to know about this universe. This move is deliberate, and we ask you to work by analogy (i.e. adapting pieces of the grammar that we gave you) and read (and follow) the instructions on the exercise sheet carefully. Don't panic! Generations of students have learned to drive the LKB this way, and for all I know, not one has drowned. I personally doubt it would be the best use of your time right now, but in case you want to know more about LKB internals, try the following command at the shell (on the IFI Linux environment): lkbdoc.