I just came across this most unusual error in Tridion 2011 SP1 HR1. A user created a page named "Auxiliary Aids..." with file name "aux". When we try to publish this page, we get the following error on the publishing queue: "FileStream will not open Win32 devices such as disk partitions and tape drives. Avoid use of
"\\.\" in the path."
It works fine if you preview the page or if you run it through Template Builder. The cause appears to be the name of the file "aux" when publishing only. If I rename it to anything else, it publishes fine.
It doesn't look like it (http://msdn.microsoft.com/en-us/library/x53a06bb.aspx), but is "aux" a reserved keyword in C#? If it is, I'm not familiar with it.
Has anyone come across this before? If you create a blank page with file name "aux", do you get the error? Can you reproduce it in Tridion 2013 too?