Assets -> Import Package problem importing water (pro)

Unity Engine
1

Getting 15 errors when I import the Water (Pro) package into a fully working (no errors) project…

First I get 13 of these:

TargetParameterCountException: parameters do not match signature
System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture)
System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters)
UnityEditor.AttributeHelper.InvokeMemberIfAvailable (System.Object target, System.String methodName, System.Object[] args) (at C:/BuildAgent/work/f724c1acfee760b6/Editor/Mono/AttributeHelper.cs:300)
UnityEditor.AssetPostprocessingInternal.PostprocessTexture (UnityEngine.Texture2D tex, System.String pathName) (at C:/BuildAgent/work/f724c1acfee760b6/Editor/Mono/AssetPostprocessor.cs:212)

Then I get two of these:

TargetParameterCountException: parameters do not match signature
System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture)
System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters)
UnityEditor.AttributeHelper.InvokeMemberIfAvailable (System.Object target, System.String methodName, System.Object[] args) (at C:/BuildAgent/work/f724c1acfee760b6/Editor/Mono/AttributeHelper.cs:300)
UnityEditor.AssetPostprocessingInternal.ProcessMeshAssignMaterial (UnityEngine.Renderer renderer, UnityEngine.Material material) (at C:/BuildAgent/work/f724c1acfee760b6/Editor/Mono/AssetPostprocessor.cs:159)

Anyone know what this is about? I love that I can import these assets but I dont like that it breaks my project lol. Also the reflection on the water surface is really strange and just not right which I assume is due to these errors. I can clear them and run it but the water just does not look right.

2

I guess its conflicting with existing shaders or scripts in your project.
I saw the same errors when importing into a project that contained shader stuff.
Tried it in a clean scene and the water worked beautifully.