"Cannot create a file when that file already exists" installation problem

[Lawlor, Jonathan]

Hello,

I'm trying to upgrade my Cygwin install to the newest version 
Using setup.exe from http://www.cygwin.com. No matter what I do, 
what I choose to install, where the local packages go to etc, 
I get the following error message:
	Mount <- that is what is in the title of the message box
		Cannot create a file when that file already exists.
			OK

When I click on OK, the installation process exists, and nothing 
is installed.

Note that sometimes the entire process is almost finished (the 
total bar is about 99% full).

Googling for "Cannot create a file when that file already exists" 
reveals that that is some kind of Windows error (code #183), 
but I have no idea which file is being created.

Does anybody have any ideas what could be going on here?

I do not want to blow away my current install.

Thank you very much,

Jonathan Lawlor

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