Wall Worm is a gaming and design group focused on developing content for the Source Game Engine. Headed by Shawn Olson, the group consists of various creative people across the globe.
What's on my mind...
When reopening a scene the models can appear as cubes if the game settings do not include paths to the source MDL files.
This document explains why models can appear as cubes instead of props when importing VMF or MDL nodes.
Sometimes WW Pro will have a problem exporting a model with a Morpher modifier if the normals cache is not being displayed properly.