Dave, thanks for your help. Everything seems to be working just fine now.
Cheers

That all seems to be working well. No error messages with the Ruby Console.
Excellent

Thanks

Apologies, I saved the SKP on the desktop, but now have moved to the Document Folder. Alas no better luck with that. But thanks for your assistance.

I am running OS 10.7.5 and the SKP is in Applications folder.

I get the flattened slices ok, select one group to Export. Choose export from Slicer and get the dialog box asking
For which format, select, then nothing happens

I am running( on a Mac) the latest version of Trimble SketchUp Pro, and have just installed the latest version of Slicer 5.19
I am having difficulties exporting flattened slices to DXF format. Have done this before with previous versions of Slicer but don't seem to be having any luck with this updated version. Does anyone out there have any suggestions?