It seems that packages split which was introduced in ReactiveUI v24 (ReactiveUI.Reactive 24.1.0) caused incompatibility with ReactiveUI.Validation.
error CS0433: The type 'IActivatableView' exists in both 'ReactiveUI.Core, Version=24.0.0.0, Culture=neutral, PublicKeyToken=null' and 'ReactiveUI, Version=23.0.0.0, Culture=neutral, PublicKeyToken=null'
Describe the bug 馃悶
It seems that packages split which was introduced in ReactiveUI v24 (ReactiveUI.Reactive 24.1.0) caused incompatibility with ReactiveUI.Validation.