I’m not sure about the view. I selected a group in the Outliner, right clicked and picked “Zoom Selection”.
Default Tag Geometry is an extension by TIG that removes tags from geometry (only tag groups and components). Then, Purged (with another TIG extension) all of the unused tags, materials, and components. You could do this with Purge Unused.
If you want to solve the zoom problem (try shift + Z and you will see that you still have problems), delete the “rail” group, purge and do again Zoom Extents (Shift + Z).
DO NOT import components from 3D Warehouse directly into your working model!
Basics of SketchUp at learn.sketchup.com, learn about groups, components ad tags.
SURE! thank you so much! Btw, i have another annoying problem, the more i zoom in, the models keep missing… some of it went through building, etc… how do i fix it?