KillLayerMan
"Destroys all layerman information for the entire scene - both at the object level and the scene level by destroying the perisstent lm info in the scene.
version 1.11 Also deletes callbacks left by layerman "
For a max 5 - 4.2 version of this script - please download bspack_r4_r5_v031.zip. Use the original bspack_r42.zip if you want only max 4.2 compatibility.
The only major differences between script packages are slight version compatibility issues - there are no new scripts added between the 3 packages.