I have a USB card reader attached.
Visual C# 2005 Express Edition Setup: setup.exe - No Disk
There is no disk in the drive. Please insert a disk into drive \Device\Harddisk3\DR12.
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Visual C# 2005 Express Edition Setup: setup.exe - No Disk
There is no disk in the drive. Please insert a disk into drive \Device\Harddisk4\DR13.
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Visual C# 2005 Express Edition Setup: setup.exe - No Disk
There is no disk in the drive. Please insert a disk into drive \Device\Harddisk5\DR14.
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On and on for about 20 times. I'm not installing to or from any of these. Is there a point to this message

Stupidest error message ever
bigshiny90
I've heard that some popular USB drives come with a utility called "u-storage" that will cause the problem that you describe.
You might want to check and see if there is a process running called ustorage.exe. If so, end it and see if that solves the problem.
ViLiO
I found the same problem, Remove the USB Drive and it works fine.