Version of Accord.Controls (latest stable 3.4.0 back through to 3.0.2) on NuGet has dependency on ZedGraph 5.1.6 - however internally in the initializer it has a hard reference to ZedGraph 5.1.5.28844 which causes designer and forms using HistogramView to fail to load in Visual Studio.

Forced deletion of ZedGraph NuGet dll and re-referencing 5.1.5.28844 allows forms and application to work ok, however package refresh/reinstalls break application again.