Are the 1050ti still giving "cannot write dag" errors on windows? And has anyone found a new fix for it?
You mean cannot allocate DAG because of 4GB video memory in 1050ti.
See, Windows OS reserves some memory in a dedicated VGA. So even though DAG size of ETH hasn't reached 4GB, you won't be able to mine in Windows no matter what.
The only solution can be to use a Linux distro to mine as there are no such problems.