I have had a couple of these "parameter is incorrect" errors recently. I notice in the most recent one some files' progress bars read 200%. I have tried deleting the incomplete data folders and resuming, but still the same error. I assume I would have to completely delete the data, torrent and all related files.
I found a recent github report about this, but couldn't really tell from the conversation what exactly had become of it. If it's possible to issue a fix for this problem it is most appreciated. Thanks.