Nice. That did the trick. My zlibs are in Windows/ and SysWOW64\ . Thanks!

I just updated to sketchucation 2.6.1. Some errors appears when loading sketchup:

Error: #<LoadError: 127: The specified procedure could not be found. - C:/Program Files (x86)/SketchUp/SketchUp 2014/Tools/RubyStdLib/platform_specific/zlib.so>
C:/Program Files (x86)/SketchUp/SketchUp 2014/Tools/RubyStdLib/rubygems/core_ext/kernel_require.rb:45:in require' C:/Program Files (x86)/SketchUp/SketchUp 2014/Tools/RubyStdLib/rubygems/core_ext/kernel_require.rb:45:in require'
c:/users/toshiba/appdata/roaming/sketchup/sketchup 2014/sketchup/plugins/sketchucation/scf-rbztools.rbs:185:in <module:RBZtool>' c:/users/toshiba/appdata/roaming/sketchup/sketchup 2014/sketchup/plugins/sketchucation/scf-rbztools.rbs:157:in <main>'
C:/Users/Toshiba/AppData/Roaming/SketchUp/SketchUp 2014/SketchUp/Plugins/SketchUcation/SCF_loader.rb:28:in eval' C:/Users/Toshiba/AppData/Roaming/SketchUp/SketchUp 2014/SketchUp/Plugins/SketchUcation/SCF_loader.rb:28:in load'
C:/Users/Toshiba/AppData/Roaming/SketchUp/SketchUp 2014/SketchUp/Plugins/SketchUcation/SCF_loader.rb:28:in block in <top (required)>' C:/Users/Toshiba/AppData/Roaming/SketchUp/SketchUp 2014/SketchUp/Plugins/SketchUcation/SCF_loader.rb:17:in each'
C:/Users/Toshiba/AppData/Roaming/SketchUp/SketchUp 2014/SketchUp/Plugins/SketchUcation/SCF_loader.rb:17:in <top (required)>' C:/Program Files (x86)/SketchUp/SketchUp 2014/Tools/extensions.rb:197:in require'
C:/Program Files (x86)/SketchUp/SketchUp 2014/Tools/extensions.rb:197:in load' C:/Users/Toshiba/AppData/Roaming/SketchUp/SketchUp 2014/SketchUp/Plugins/!SketchUcation_loader.rb:191:in register_extension'
C:/Users/Toshiba/AppData/Roaming/SketchUp/SketchUp 2014/SketchUp/Plugins/!SketchUcation_loader.rb:191:in <module:SCF>' C:/Users/Toshiba/AppData/Roaming/SketchUp/SketchUp 2014/SketchUp/Plugins/!SketchUcation_loader.rb:16:in <top (required)>'
Error Loading File examples/exampleScripts.rb
Could not find included file 'examples/exampleScripts.rb'
Error Loading File ocean/ocean.rb
Could not find included file 'ocean/ocean.rb'

Anyone can help? Thanks in advance.

Found the cause of it. Actually its from the stl I have used netfabb to try to fix it. So, the CFace errors are those extra surfaces added from netfabb to make the model water tight. Then only i imported into sketchup and try to clean it. I managed to solve it by importing the stl directly, clean using cleanup, redraw uneven and erroneous faces. No problem after that. Thanks for the replies mac1

Attached is the file:

https://www.dropbox.com/s/5y5lve896tpqklb/base.skp?dl=0

After some trials, the errors happens when i tried merge faces

@cotty said:

And the question is?

The cleanup seems to delete wrong faces? The coplanar error appears only after the cleanup plugin is used to clean the model.

Hi

I imported an STL file into sketchup 2014 and I am trying to clean the faces with cleanup and it appears to cause some problems.

CEdge (15569) and CEdge (1510) connect the same 2 vertices - fixed
CEdge (14024) and CEdge (1479) connect the same 2 vertices - fixed
CEdge (1268) and CEdge (15568) connect the same 2 vertices - fixed
The plane equation for CFace (15570) is not valid - fixed
The plane equation for CFace (15576) is not valid - fixed
The plane equation for CFace (15588) is not valid - fixed
The plane equation for CFace (15637) is not valid - fixed
The plane equation for CFace (15643) is not valid - fixed
The plane equation for CFace (15655) is not valid - fixed
The plane equation for CFace (15606) is not valid - fixed
The plane equation for CFace (15662) is not valid - fixed
The plane equation for CFace (15675) is not valid - fixed
The plane equation for CFace (15829) is not valid - fixed
The plane equation for CFace (15822) is not valid - fixed
The plane equation for CFace (15781) is not valid - fixed
The plane equation for CFace (15795) is not valid - fixed
The plane equation for CFace (15802) is not valid - fixed
The plane equation for CFace (15815) is not valid - fixed
The plane equation for CFace (15755) is not valid - fixed
The plane equation for CFace (15767) is not valid - fixed
The plane equation for CFace (15774) is not valid - fixed

I am using SuSolid to check whether the model is watertight. Directly after i import, the SuSolid shows no problem with the model. However after i ran cleanup, some issues appear. I am using Sketchup 2014.