Lost connection between airport time capsule and extreme, can't get extreme back in network, says connection excellent

I have 2 terabyte Time capsule, last gen, not newest. I have a similar airport extreme to extend my network. I was running Lion. I upgraded to Maverick to see if it would fix this problem, and it did not. When using airport utility, latest version, it says that the extreme has an excellent connection, but fails to extend the network. This started the last time I upgraded Lion. I have tried rebooting, renaming the extreme to no avail. I moved it to the same room as the time capsule, no luck.