Returned to these error messages within Ruby Console (I'm using Sketchup Pro 2019)

Material Consolidator: Tolerances: R=15 G=15 B=15 A=0
Material Consolidator: Making Material Lists
Material Consolidator: Making Entities List
Material Consolidator: Making Nested Entities List
Material Consolidator: Consolidating Materials
Error: #<NoMethodError: undefined method display_name' for nil:NilClass> C:/Users/###/AppData/Roaming/SketchUp/SketchUp 2019/SketchUp/Plugins/materialconsolidator.rb:202:in block (3 levels) in new'
C:/Users/###/AppData/Roaming/SketchUp/SketchUp 2019/SketchUp/Plugins/materialconsolidator.rb:195:in each' C:/Users/###/AppData/Roaming/SketchUp/SketchUp 2019/SketchUp/Plugins/materialconsolidator.rb:195:in block (2 levels) in new'
C:/Users/###/AppData/Roaming/SketchUp/SketchUp 2019/SketchUp/Plugins/materialconsolidator.rb:191:in each' C:/Users/###/AppData/Roaming/SketchUp/SketchUp 2019/SketchUp/Plugins/materialconsolidator.rb:191:in block in new'
C:/Users/###/AppData/Roaming/SketchUp/SketchUp 2019/SketchUp/Plugins/materialconsolidator.rb:189:in each' C:/Users/###/AppData/Roaming/SketchUp/SketchUp 2019/SketchUp/Plugins/materialconsolidator.rb:189:in new'
C:/Users/###/AppData/Roaming/SketchUp/SketchUp 2019/SketchUp/Plugins/materialconsolidator.rb:71:in `block in module:MaterialConsolidator'

Hey TIG, so I'm running your program on my 150MB file with many materials (~150) and components. It seems to 'freeze' on the "Making Nested Entities List." step. Takes up a lot of CPU processing power but not seeing any progress. I'm leaving it 'running' for a few hours to give it a chance to finish. If it's not frozen and working as intended, could I suggest making some form of a progress bar or status updates, maybe even a pause option. If it's not working as intended, well, consider yourself informed.