"Ambiguous Reference 'Label'" Errors, WebGL

Hello,

I'm in the process of converting an older project to Unity 5, and exporting it as WebGL. This may bring to light other issues, but the bulk of my compilation errors are similar to the following:

"Assets/Scripts/AssessmentControl.js(264,34): BCE0004: Ambiguous reference 'Label': UnityEngine.GUI.Label(UnityEngine.Rect, UnityEngine.GUIContent), UnityEngine.GUI.Label(UnityEngine.Rect, UnityEngine.Texture), UnityEngine.GUI.Label(UnityEngine.Rect, String)."

That line in particular looks like this:

GUI.Label(Rect((Screen.width/2)-164,(Screen.height/2)-156,352,76), preanswer[0]);

Unfortunately I cannot convert to the new GUI system, but it is my understanding that the legacy still functions. Any help is greatly appreciated, thanks in advance!

Pat