[Exist-open] Error 400 after update, solved by querying Function Library

[Joe W. <jo...@gm...>]

Dear eXist list,

I'm writing with a question that is puzzling me.  When I return go to
work or return home from work and load my latest eXist collection into
my  computer (delete the old collection, upload the newer one via Java
admin), I get an Error 400 when I access the files (XQuery files
serializing as HTML) via eXist's REST interface.  Nothing I do
(reloading the webpage, restarting eXist) will stop the error.  The
only thing that fixes the problem is going to the Function Library
(via http://localhost:8080/exist/xquery/functions.xq) and typing in a
search term to the function library; then, my own .xq files
mysteriously work.

I'm using eXist 1.2, on an iBook, iMac, and WinXP.  Why do you think
eXist is getting stuck on my code, and then unstuck by the Function
Library?

Thanks in advance,
- Joe