[Closed] No Gizmo?

Of all the weird errors I’ve ever received, I’m getting this from MaxScript:

Unknown property: “gizmo” in Uvwmap:UVW Mapping

During the execution of the following code. Note, that it doesn’t fail until the commented line. I can’t figure this one out. When executing each step manually through the listener, it works perfectly. I’ve fought this for three days, and I can’t figure it out. Any help would be most welcome. Thanks.

 fn GenerateUVW myRow myCol =		-- Creates a UVW on both Terrain and Sealevel, uses sealevel to find
 											--  the correct rotation, and applies it to the Terrain patch
 (
 	if myRow < 10 then strRow = "0" + (myRow as string)
 	else
 		strRow = myRow as string
 
 
 	seaname = "SeaLevel-" + TQRegion + "-" + TQSubRegion + "-" + TQQuadName + "_" + strRow + "_" +Alphabet[myCol]
 	seamesh = getNodeByName seaname
 	addModifier seamesh (UVWMap())
 	
 	-- Make a UVMap on Sea Level
 	theFace = seamesh.numfaces / 2 -- Try to get a face near the middle of the mesh
 	faceNormal = in coordsys seamesh (getFaceNormal seamesh theFace)
 	worldUpVector = [0,0,1] 
 	rightVector = normalize (cross worldUpVector faceNormal) 
 	upVector = normalize ( cross rightVector faceNormal )
 	theMatrix = matrix3 rightVector upVector faceNormal [0,0,0] 
 
 
 	seamesh.modifiers[1].Gizmo.transform = theMatrix
 
 	in coordsys seamesh.transform
 	(
 		M = seamesh.modifiers[1].Gizmo.rotation as matrix3
 	
 		Pmin = (getVert seamesh 1) * M
 		Pmax = (getVert seamesh 1) * M
 		for i = 2 to getNumVerts seamesh do
 		(
 			p = (getVert seamesh i) * M
 			if p.x < Pmin.x then Pmin.x = p.x
 			if p.y < Pmin.y then Pmin.y = p.y
 			if p.z < Pmin.z then Pmin.z = p.z
 			if p.x > Pmax.x then Pmax.x = p.x
 			if p.y > Pmax.y then Pmax.y = p.y
 			if p.z > Pmax.z then Pmax.z = p.z
 		)
 	
 		sz = (Pmax - Pmin) * 1.00001
 		seamesh.modifiers[1].Gizmo.position = (Pmin + Pmax) / 2 * inverse M
 		seamesh.modifiers[1].width = sz.x
 		seamesh.modifiers[1].length = sz.y
 		seamesh.modifiers[1].height = sz.z
 	)
 	
 	terrainname = "TerraQuad-" + TQRegion + "-" + TQSubRegion + "-" + TQQuadName + "_" + strRow + "_" +Alphabet[myCol]
 	terrainmesh = getNodeByName terrainname
 	addModifier terrainmesh (UVWMap())
 	terrainmesh.modifiers[1].uflip=true
 /***********************************************************/
 /* FAILS HERE */
 	terrainmesh.modifiers[1].Gizmo.transform = theMatrix
 /***********************************************************/
 	in coordsys terrainmesh.transform
 	(
 		M = terrainmesh.modifiers[1].Gizmo.rotation as matrix3
 		
 		Pmin = (getVert terrainmesh 1) * M
 		Pmax = (getVert terrainmesh 1) * M
 		for i = 2 to getNumVerts terrainmesh do
 		(
 			p = (getVert terrainmesh i) * M
 			if p.x < Pmin.x then Pmin.x = p.x
 			if p.y < Pmin.y then Pmin.y = p.y
 			if p.z < Pmin.z then Pmin.z = p.z
 			if p.x > Pmax.x then Pmax.x = p.x
 			if p.y > Pmax.y then Pmax.y = p.y
 			if p.z > Pmax.z then Pmax.z = p.z
 		)
 		
 		sz = (Pmax - Pmin) * 1.00001
 		terrainmesh.modifiers[1].Gizmo.position = (Pmin + Pmax) / 2 * inverse M
 		terrainmesh.modifiers[1].width = sz.x
 		terrainmesh.modifiers[1].length = sz.y
 		terrainmesh.modifiers[1].height = sz.z
 	)
 	
 	
 )