I find that I can get around the IO 32 problem if I restart the program. It will work once and then the IO error appears again. This morning I have tried waiting over a hour between runs and it appears to work. Perhaps this error refers to a memory allocation. But it precludes running the scheduler.
This is a problem with a file not closing. It is easy to fix but I have to know the sequence of commands that lead up to that error -- whatever module is not closing the file is what needs to be fixed, and without guessing at the module there's no good way to find the cause.