December CTP failure

Fri, December 24, 2004, 03:58 PM under Whidbey | VisualStudio
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Microsoft Visual Studio 2005 Beta 2 Setup
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Error 1305.Error reading from file d:\vs\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bootstrapper\Packages\InstMSI\instmsiA.exe. Verify that the file exists and that you can access it.
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Retry Cancel
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I have been trying all day to get the December CTP installed. Every sinlge time the message above halts the show. Yes, the file (and the instmsiW.exe) are both present on the C hard drive and the D dvd drive. The one on the C drive seems to be used by something because it will not let me delete/rename/overwrite it. Maybe there is already too much alcohol in me, but the fact is I can't see a solution and am giving up :-(

Merry (hic) Xmas!