PS: my next project is an undercarriage mount for the lawsy carriages that will hold the servo motor needed for the auto bed leveling upgrade.  I really hope I can get that working.

AZERATE had a similar issue a week or so ago with a different file so I wonder if he could chime in as to a solution.

Just fixed my problem. I found that my personal issue was that the stl plugin either became corrupt and purged by the system, I accidentally removed the file (highly doubtful), or it grew legs and walked back to Google land.
I always prefer 8, but have 2013 installed as well....don't ask why. 

Anyway, I had the issue of whenever I attempted to export the stl, once the file directory window popped up, the File Type was blank, thus making it impossible to find the stl since it was saved without a ".xyz" If this is your issue, you will have to reinstall the plugin here: http://extensions.sketchup.com/en/content/sketchup-stl

Before clicking download on the Sketchup site, follow the steps I numbered.
1) Click windows tab in the program.
2) Click preferences.
3) Click extensions.
4) Make sure the stl export plugin box is checked.

Away you go! I have successfully saved and exported a basic shape, and only once since this fix, but it is now working again for the first time in about 2-3 weeks.

Hope this helps

Also, I see that the inside "rim" where it grips the hot end heat sink is 5.3 mm deep while the actual dimensions from E3D's website is 6.0 mm.  Is this just because you assume most printers will slightly over extrude and it will end up about right?  If I have any slop left when this is done, I might try is again with a ~5.7mm rim.

Thanks.  I am still trying to figure out why mine exports gibberish.  It is for mounting an E3D V6 hot end on a solidoodle.

However, there seems to be a scaling issue with the stl output you posted.  It's not an inches to mm issue because 25.4 scale makes it way too big.  10x looks closer but I need to figure out what happened to the scale before it is usable.  Any guesses?  The top piece was posted by another user, and I only partially trimmed it, I did not scale any of it myself.

export from sketchup to dae in to cinema 4d to export as stl... the scale should be like X10 larger... well usually its what happens here....

However, there seems to be a scaling issue with the stl output you posted.  It's not an inches to mm issue because 25.4 scale makes it way too big.  10x looks closer but I need to figure out what happened to the scale before it is usable.  Any guesses?  The top piece was posted by another user, and I only partially trimmed it, I did not scale any of it myself.