Maybe this have some bearing maybe not?
In the plugin PanelingTools for Rhino I had the same problem.
The developer Rajaa Issa fixed an option in PT and it works now.
If your looking thru the Rhino Newsgroup search for "PanelingTools bug or?? http://news2.mcneel.com/scripts/dnewsweb.exe?cmd=xover&group=rhino
In the later section in the thread there is some explaining by Rajaa about the gap occurring in PanelingTools
maybe it helps someway?
No problem, you have to start a new newsgroup account.
I think its tools-accountsettings-add an account and chose account for newsgroup (or discussiongroup, or something like it), fill in "news.rhino3d.com" for the server settings and your personal settings, and I think that's it. Its been some time since I did it.
Good luck with it, its a really great place for Rhino knowledge