Problem with setting transform in C++

Hello,

I am working on a spherical terrain implementation, and one of the steps is to generate six flat terrains in a cube, before projecting the onto a sphere.

I can create the terrains with no difficulty, but for some reason, I can't alighn them into a cube properly! I can align at most three of them, the rest are all rotated incorrectly.

Here is my transform code: (This is not very efficient, but I am just trying to get the concept working!)

Point3F pos = Point3F(0,0,0);
	QuatF rot = QuatF(EulerF(0,0,0));//QuatF(0,0,1,0);
	MatrixF mat;
	rot.setMatrix(&mat);
	mat.setColumn(3,pos);
	//Parent::setTransform(mat);
	terrain->setTransform(mat);


	Point3F pos2 = Point3F(0,256,0);
	QuatF rot2 = QuatF(EulerF(-1.57079633,0,0));//QuatF(0,0,1,0);
	MatrixF mat2;
	rot2.setMatrix(&mat2);
	mat2.setColumn(3,pos2);
	terrain2->setTransform(mat2);


	Point3F pos3 = Point3F(0,0,-256);
	QuatF rot3 = QuatF(EulerF(0,1.57,0));
	MatrixF mat3;
	rot3.setMatrix(&mat3);
	mat3.setColumn(3,pos3);
	terrain3->setTransform(mat3);


	Point3F pos4 = Point3F(0,0,-256);
	QuatF rot4 = QuatF(EulerF(1.57079633,0,0));
	MatrixF mat4;
	rot4.setMatrix(&mat4);
	mat4.setColumn(3,pos4);
	terrain4->setTransform(mat4);


	Point3F pos5 = Point3F(256,0,0);
	QuatF rot5 = QuatF(EulerF(0,-1.57079633,0));
	MatrixF mat5;
	rot5.setMatrix(&mat5);
	mat5.setColumn(3,pos5);
	terrain5->setTransform(mat5);


	Point3F pos6 = Point3F(0,resolution,0);
	QuatF rot6 = QuatF(EulerF(0,-1.57079633,0));
	MatrixF mat6;
	rot6.setMatrix(&mat6);
	mat6.setColumn(3,pos6);
	terrain6->setTransform(mat6);

The strange thing is, that when I set the rotation in the editor, it works?
So, for example, the third terrain is created with the following quaternion:
"QuatF rot3 = QuatF(EulerF(0,1.57,0));"
This terrain shows up rotated incorrectly, but the editor shows it as "0 -1 -0 89.9544", which is wrong, it should be "0 1 0 89.9544". When I correct this in the editor, the terrain rotates properly.

Something seems to be going wrong with the signs between the set transform function and the editor, any ideas?

Thanks!