Robert:
This occurs only with PIO's created from Object Palette. PIO's selected from Resource Palette, display in the appropriate class colors, etc.
Katie:
I am familiar with the Class Dialogue block. I always click Yes &/or Yes Always. Regarding the file in question, the objects displaying incorrectly were assigned to their correct class from the start & were never changed. However, after reading your post, I selected several doors (placed by Task Mgr in Sills Class), the Object Info palette listed the objects as "Doors in Wall" - I changed the class to None, clicking Yes in the Class Dialogue block, and then changed the class back to Sills, again clicking yes. The walls that the doors were inserted in changed to the Sills class color (blue), but the objects remained black. This is not a big problem, but I would like to know how to correct this.