Job Sabotage

We have been hired to stitch a quilt, and we are suspecting someone, we are sure the cat, of trying to sabotage our efforts.  We don't know what else could be wrong.  It has to be something Brother has done.  We have stitched this pattern for fun before and it went together just fine, but now that we are going to be getting money for it, our seams are off, our corners don't meet, and it is in short a disaster.  The human tried to assist us and ended up in tears of frustration.  What does Brother have against our earning money?