Sounds like my day - decided to be nice and change the needle on my machine, can't remember when I last put a new one in, although I haven't quilted for nearly 6 months due to a ruptured disk in my neck, surgery and rehab. Anyhoo, put the new needle in, spent 15 minutes trying to thread needle, was doing the last bit of top stitching to a Bow Tucks handle, and yup - ran out of bobbin thread. Filled the bobbin again, then of course had to spend another 11 minutes re-threading the needle, etc.,etc., got a phone call - well at least I finished topstitching the handle - tomorrow is another day. LOL