Straaange link action with multiple/sub/dirs

Folks,

I'm running a tiny wiki, right now mainly used to quickly record and 
edit some doc as I ramp up into a new group at work.
For some odd reason, when I click 
https://site/wiki/bishop/work/buildpi/ccase/bestPractice?action=create , 
it takes me to 
https://www.platypus.bc.ca/wiki/bishop/work/buildpi/ccase/bishop/work/buildpi/ccase/bestPractice 
to describe the page.
Notice, in the link above, that the '/bishop/work/buildpi' part is 
doubled.  Drop that shorter URL into your own wiki, and see if the page 
it wants you to edit has the longer name?
I swear the link in the referring page looks tip-top.  Anyone seen 
anything like this?
Also, I haven't yet found a facility for moving a page about yet.  You 
know, a renamer that moves a page label (refusing if the destination 
label already has a page) and also alters all referring pages.  While 
such a tool would be no good for outsiders linking in (maybe it puts a 
redirect/notice page in there?), it would make the odd movement of pages 
a bit better.
 - bish
perplexed
--
        At one time it was rare to find US citizens, in the
        safest and most prosperous country in the world,
        jumping at their own shadows. Now we only note how high.
                                -- Andrew Orlowski
        http://www.theregister.co.uk/content/28/34776.html



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