Compiler error everytime i install standard assets, plese help

Hello.

Everytime i add the standars assets i get compiler errors. I have reinstalled unity several times, it works fine without the standard assets, but as soon as i install them i get theese errors:

Assets/Standard Assets/2D/Scripts/Platformer2DUserControl.cs(3,27): error CS0234: The type or namespace name CrossPlatformInput' does not exist in the namespace UnityStandardAssets’. Are you missing an assembly reference?

Assets/Standard Assets/Cameras/Scripts/FreeLookCam.cs(3,27): error CS0234: The type or namespace name CrossPlatformInput' does not exist in the namespace UnityStandardAssets’. Are you missing an assembly reference?

Assets/Standard Assets/Utility/ForcedReset.cs(4,27): error CS0234: The type or namespace name CrossPlatformInput' does not exist in the namespace UnityStandardAssets’. Are you missing an assembly reference?

Assets/Standard Assets/Utility/SimpleMouseRotator.cs(3,27): error CS0234: The type or namespace name CrossPlatformInput' does not exist in the namespace UnityStandardAssets’. Are you missing an assembly reference?

Assets/Standard Assets/Vehicles/Aircraft/Scripts/AeroplaneUserControl2Axis.cs(3,27): error CS0234: The type or namespace name CrossPlatformInput' does not exist in the namespace UnityStandardAssets’. Are you missing an assembly reference?

Assets/Standard Assets/Vehicles/Aircraft/Scripts/AeroplaneUserControl4Axis.cs(3,27): error CS0234: The type or namespace name CrossPlatformInput' does not exist in the namespace UnityStandardAssets’. Are you missing an assembly reference?

Assets/Standard Assets/Vehicles/Car/Scripts/CarUserControl.cs(3,27): error CS0234: The type or namespace name CrossPlatformInput' does not exist in the namespace UnityStandardAssets’. Are you missing an assembly reference?

This in on a fresh installation, gotta say thumbs down to Unity for this, if it wasnt for alle the money i invested in assets, is move on to different software by now.

Hi @gabsterino
It seems you are importing Character Asset, which is in turn dependent on the Cross-Platform and Utility Asset. Importing both the assets resolved the errors for me.

Probably other project has some standart assets too.Doubling the assets.

Instead of adding the assets through Assets->Import Package->Package Name, go to the asset store tab and import the standard assets from there Window->Asset Store->Downloads->Import.

problem fixed here : Unity Standard Assets 2020 | Fixing standard assets error - YouTube