Server Error in '/CS' Application. I am reviewing Web Part Franework from the SAMS Book, ASP.NET 2.0 Unleashed.  On a VS2008/.NetFrameowrk 3.5 workstaion, I have successfully run the VB\SimpleWebParts1.aspx of Chapter 27.  One the other hand, to see how the .NetFramework 4.0 works on this website, I ran CS\SimpleWebParts1.aspx on another workstation with VS2010.   The VS2010 workstion showed the error messages below.   There is an ASPNETDB.MDF file in the App_Data folder of the VS2008 VB website, but no ASPNETDB.MDF file in the App_Data folder of the VS2010 workstaion. Exactly what does the error msg mean?   Why  \\SCA90DD\C$\ASPNET20UNLEASHED\CHAPTER 27\CS\APP_DATA\ASPNETDB_TMP.MDF" is on a network path? What does 'not supported for database files' mean?  'CREATE DATABASE failed' ????? < ...

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