The type or namespace name `Tooltip' could not be found

[bamboofx]

i'm using unity 4.3.
I Just import package to unity and got 23 error:

Assets/Cardboard/Scripts/StereoController.cs(74,4): error CS0246: The type or namespace name `TooltipAttribute' could not be found. Are you missing a using directive or an assembly reference?
Assets/Cardboard/Scripts/StereoController.cs(83,4): error CS0246: The type or namespace name `Tooltip' could not be found. Are you missing a using directive or an assembly reference?

how can i fix it

[davidmarcbrown]

Upgrade to at least 4.5: http://docs.unity3d.com/ScriptReference/40_history.html#4-5-0

[bamboofx]

it's work. Thanks david.
File StereoController.cs still error with typo:

Line 23: ToolTip -> Tooltip 

[smdol]

See also here, for a solution that backports Tooltip to earlier versions of Unity:

http://stackoverflow.com/questions/27541593/google-cardboard-unity-sdk-import-error-for-android