are you using the latest Revit Build. here are some the things it fixes. among them are Pantone.
Export to DXF/DWG will now export the Material's color_map texture.
Mass Floors no longer disappear when adding text to Mass Element comments.
Improves stability of worksharing when saving to central.
Improves visibility of common edges when joining in-place family.
Improves stability when accessing Pantone dialog.
Improves stability when upgrading project or family from the 2008 version of a Revit product.
Improves stability when selecting elements in a 3D view.
Moving a model pattern with a face-based family constrained to it no longer causes a constraint error.
Improves stability when switching between views.
Improves stability when importing DWG files.
Improves performance when adding or editing walls in models with rooms.
Improves stability when creating a section.
When exporting to DWG, the ceiling pattern will now export correctly.
After a project is upgraded to the 2009 version of a Revit product, the linework will now display as set in previous version.
Enables "Show family pre-cut in plan views" parameter for structural framing category family so that the geometry can be cut by the cut plane in medium and fine views.
HTH
bmpArchitects,Inc.