[plt-scheme] cdr: expects argument of type <pair>; given #f

I have met the exact same bug before, in an older version of DrScheme (sorry I
can't remember exactly which version, but v3XX). Close Help Desk windows, and
reenter works for me.

Chongkai

Quoting Kyle Smith <airfoil at bellsouth.net>:

> I just downloaded and installed the full Windows Installation 359.200.  
> When I search on anything in the help desk, I get a list of appropriate 
> choices.  But when I click on one of them, I'm sent to a screen that 
> tells me:
> 
> The file you were looking for was not found on the Help Desk server.
> 
> _Help Desk Home
> _
> Powered by PLT
> 
> When I then click on _Help Desk Home_ I get a dialog box which gives the 
> error message:
> 
> cdr: expects argument of type <pair>; given #f
> 
> Has anyone seen this before?  I checked all my directory settings, and 
> they all appear to be in order.  There were no installation problems, 
> and all my plt packages and planet requires have been reinstalled 
> without a hitch.  But I have no Help Desk.
> 
> Thanks,
> 
> --kyle
> airfoil at bellsouth.net
> http://schemekeys.blogspot.com/
>