10 month old keeps waking up everytime I put him down in hes crib. HELP!!!

He was such a good sleeper, bedrime routine nd hes out, in the crib and wont wake-up till 6am or so in the morning

But ... hell ... we going on week 3 now that every night at bedtime he wakes and stands up in hes crib calling for us. Will only sleep if in our arms.

I've tried everything, I mean everything.... not very far off from co- sleeping... im exashuted getting minimal sleep that I'm starting to suffer from server headaches

Help ... i don't know what else to do.