Were are running 7.6.1 b2 on test server trying to verify all of our systems before moving to 7.6 in production. We uae the tag history splitter and there seams to be issue with it in this version.
Our splitter provider is called IGN_Dragline
looking at #1 IGN_Dragline8750
Data is logging as expected but when trying to look at the data in trends then I have issue. If you simple drag tag onto trend the it uses the IGN_Dragline provider in the tag path which is what we want but it throughs error when you do this. If you change to one of the other providers then it work fine.
I have this same setup on 7.5.8 and it works fine using the IGN_Dragline provider.
Here is the error we are seeing.