Like Title says, I got 2 errors right after i imported the asset
Assets/ParadoxNotion/FlowCanvas/Framework/_Commons/Design/PartialEditor/EditorUtils/EditorUtils_ReflectedInspector.cs(183,29): error CS0117: UnityEditor.EditorGUILayout' does not contain a definition forEnumFlagsField’
Assets/ParadoxNotion/FlowCanvas/Framework/Design/PartialEditor/Editors/BlackboardEditor.cs(373,29): error CS0117: UnityEditor.EditorGUILayout' does not contain a definition forEnumFlagsField’
im using unity 2017.2.0f3 (not sure if this matters)
The important difference that needs changing is actually only this: #if UNITY_2017_3_OR_NEWER.
If you have any troubles at all making the changes, please let me know, I will gladly send you the changed files to your email account for your convenience.