Can you find the mistake?

GRRR this months installment of the Burning the Midnight Oil BOM is making me grey!

There were only 4 blocks to piece but, I have had a hard time with them. First there was a small mistake in the pattern, Heather fixed that. Then, as I was finishing the 4 blocks up Jessica came into the sewing room and pointed out to me that I had a HST unit in upside down!! So, more seams to rip out and resew.

I am making a date with Ms Clairol to cover these new grey hairs.

LOL
Penny