My babylock Quilter's Choice Professionel is not so pickey but my Babylock Ellure Plus can be a B---h with thread. Change the needle. I have found it works more times than not & make sure it is threaded right. I kept having trouble with the thread breaking or eating it into bobbin case so I took apart twice to clean & finally found the problem. When needle broke, the tip wound up under bobbin case & I didn't know so make sure when you break one you find all the pieces.