more calender ?s

Ok, I have a few more questions about the calender. I am trying to set up catagories, but whenever I press SUBMIT or DONE it give me a 404 page not found error. Also, I would like to add an event that runs untill midnight, but when I put something like 6PM as a start and 12 AM as an end time, it give me a "bad time" error. How can I disable this "bad time" checking?

To fix the category problem:
if the calendar is not in the root of your web tree remove / from lines 212 and 352 of ltw_classes.php

To fix the midnight problem, 12:00am is the following day, so version 4 (out this week?) will let you add a "multi day" event. For now you would need to select 11:45pm.