Firefox ns error failure on i.prototype.drawText

Was just trying to draw some axis for transformations based on some already working code on the forums/playground and I keept getting errors in Firefox that points to the i.prototype.drawText function in the babylon js library.

Here's the error:

Here's the source:

       var showAxis = function (size) {

          var makeTextPlane = function (text, color, size) {
            var dynamicTexture = new BABYLON.DynamicTexture("DynamicTexture", 50, scene, true);
            dynamicTexture.hasAlpha = true;
            dynamicTexture.drawText(text, 5, 40, "bold 36px Arial", color, "transparent", true);
            var plane = new BABYLON.Mesh.CreatePlane("TextPlane", size, scene, true);
            plane.material = new BABYLON.StandardMaterial("TextPlaneMaterial", scene);
            plane.material.backFaceCulling = false;
            plane.material.specularColor = new BABYLON.Color3(0, 0, 0);
            plane.material.diffuseTexture = dynamicTexture;
            return plane;
          };

          var axisX = BABYLON.Mesh.CreateLines("axisX", [
            new BABYLON.Vector3.Zero(), new BABYLON.Vector3(size, 0, 0), new BABYLON.Vector3(size * 0.95, 0.05 * size, 0),
            new BABYLON.Vector3(size, 0, 0), new BABYLON.Vector3(size * 0.95, -0.05 * size, 0)
          ], scene);
          axisX.color = new BABYLON.Color3(0, 0, 1);
          axisX.position.z += 20;
          axisX.position.y -= 4;
          axisX.position.x -= 40;
          var xChar = makeTextPlane("X", "red", size / 10);
          xChar.position = new BABYLON.Vector3(0.9 * size, -0.05 * size, 0);
          var axisY = BABYLON.Mesh.CreateLines("axisY", [
            new BABYLON.Vector3.Zero(), new BABYLON.Vector3(0, size, 0), new BABYLON.Vector3(-0.05 * size, size * 0.95, 0),
            new BABYLON.Vector3(0, size, 0), new BABYLON.Vector3(0.05 * size, size * 0.95, 0)
          ], scene);
          axisY.position.z = 34
          axisY.position.y = -20;
          axisY.position.x += offset;
          axisY.color = new BABYLON.Color3(0, 0, 1);
          var yChar = makeTextPlane("Y", "green", size / 10);
          yChar.position = new BABYLON.Vector3(0, 0.9 * size, -0.05 * size);
        };

 I tried both preview and stable versions of babylon.js, both with the majority of components included.