Brother toner cartridge problem

[olnacl]

Yes to all questions posed above - nothing in the path as once I reinserted the original Brother cart, it works fine. Even switched back to the new cart with same results and back again to the original. The housing is a bit different, mostly lacking a ridge that locates it at the right end near the latch tab, but it seemed to insert and lock just fine. I did remove the sticker, BTW. Maybe it's just not worth it to use cheap cartridges.