Sometimes when trying to connect Visual Studio t a device, especially to a custom CE platform, it is helpful to see if there are any problems reported by the CoreCon components on the device side. CoreCon components (ConmanClient, trasnport DLLs, edbgtl.dll and edm.exe) all have an integrated logging facility, which can be used by a developer for troubleshooting.
To enable Corecon debug log you can set the following under HKLM\Software\Microsoft\VSD\Logging
VSD_LogEnabled: DWORD:1,0
VSD_LogToDebugger: DWORD:1,0
VSD_LogToConsole: DWORD: 1,0
VSD_LogToFile: DWORD:1,0
VSD_LogLevel: DWORD - set to at least 4, up to 9
VSD_LogFile: REG_SZ (default VSDLogFile.txt)
Keep in mind that the ConMan log can be quite chatty, so enable it sparingly and only when needed