Ah yes sorry this makes more sense:
Error: #<Encoding::UndefinedConversionError: "\x81" to UTF-8 in conversion from Windows-1252 to UTF-8>

Not sure if this contains errors but this is the last few lines of my ruby console:

FreeDXF/SKUI/window.rb:269:in block in add_callback' SketchUp:1:in call'

It has stopped working for all files. And i did keep with the same settings. I did try it with a lower circle segment geometry setting just to see if that made a difference...but it didn't.

I was loving this plug-in , really useful thank you!

But...alas.. it stopped working on me this morning, it gets to the import screen and then doesn't do anything once I click import. It says at the bottom that it is 'parsing' but nothing more. I have uninstalled and reinstalled. I wonder if anyone has had the problem and if there is either something I am doing wrong, or if this is a common problem?

I am using Sketchup Make 2016. and AutoCAD LT 2017. But i have tried saving in previous dxf versions of AutoCAD.
Hoping you can help.