One day last week I started up BitComet 1.9 and my task list appeared empty.
It should have shown about 15 files uploading and about 10 downloading.
After browsing the forums, couldn't find any adequate solution.
So I tried the work around, re-opening the original torrent file etc, which worked ok for the downloads, but not for the uploads.
Which was a timewaster, because the following day the task list disappeared again.
I uninstalled BC 1.9, then installed BC 1.10, reconstructed the task list.
The next day, guess what, the task list was empty again.
There are plenty of complaints on this forum about the same problem, why no explantion of why it happens, and why no proper fix?