[DotNetDevelopment] the command "copy" - does anyone know what this compile error message means?

[codecaptain]

Error   1       The command "copy "C:\Users\Public\Documents\Cerf Pen App\..\..
\common\lib\*.*" "C:\Users\Public\Documents\Cerf Pen App\bin\x86\Debug
\"" exited with code 1. GetPenInformation