Blender Issue

Hi all! I made a model in Blender and it comes up with this error when I drag it into Unity: Blender could not be found.
Make sure that Blender is installed and the .blend file has Blender as its ‘Open with’ application!
UnityEditorInternal.InternalEditorUtility:ProjectWindowDrag(HierarchyProperty, Boolean)
UnityEditor.DockArea:OnGUI()

I have no idea what this means I’ve never used Blender with Unity before. How can I fix this?

IMPORTANT: if you are using a copy of blender downloaded off of Steam, it will not work. Get the official copy from the website!

If you are saving a Blender file as a .blend; you need to be in Object Mode when the model is saved, otherwise Unity will not be able to properly access it. Another solution is to export the model as an Autodesk (fbx) file from Blender.