Deimos:
I don't have the Cadimage Wallbuilder, so I don't know of any specific problems with this add on, but the textures normally align by default (they are all starting at the project origin). You can use the
Align 3D Texture command (search the Help file for more information about this command) to align the texture on specific elements.
You should add a Signature to your Profile (click the Profile button near the top of this page) with your ArchiCAD version and operating system (see mine for an example) for more accurate help in this forum.
David