Candle - Soon you will be able to add custom media to Signs, this will allow you to create walls to the thickness of your choice.
I just finished up the sound / text script portion. I will be posting a new version in about an hour. Then I am going to start going back through the wall meshes. But, the standard thickness for walls in Signs is going to be the thickness of the Arch locrian sent me.
Back to the scripts . . Been testing the different combinations and everything seems to work properly. My favorite is when you create a Sign, and then set distance to 60, set keypress to L (for Listen) and set to continuious play. The player then walks up to the Sign and has to press the L key to hear the message. Would be good for Notes and things like that.
Edit: Higgins - which segment did you create, Arch, Wall, Walk Through or IsMobile. My best guess would be that the mesh is not wrapping the texture correctly and is probably one of the meshes I did.
Will be sorted out though.