Extract Linetype From DWG File?

I've got a linetype that's part of our autocad template file and has been for so long that nobody around here even knows where the original lin file is.

I need to extract the linetype out so that I can make some minor modifications.  I did do a search and found a nifty lsp routine from Paul Turvill.  (Here's the thread that pointed me there:  http://forums.autodesk.com/t5/Visual-LISP-AutoLISP-and-General/Extracting-Linetypes/m-p/1037624/highlight/true#M150152).

I ran it and it SEEMED to work.  All the linetypes in the file it created look good EXCEPT for the one I needed to extract.

That one looks like this in the lin file:

 
*TREELINE,Series of arcs used to indicate tree drip lines
A,0.0001,-0.0001,

The linetype DOES display properly in the dwg file (meaning lines drawn using it look good).

Any ideas/suggestions?

TIA!