While creating a setup file for asp.net project through Visual Studio 2003 error no 1706 may come. This error will be reported during auto repair process of Visual Studio 2003. And hereafter the setup will be stopped or will be built with errors. This error no 1706 causes because of improper registration of ‘mergemod.dll’. All that is required to get out of this problem is to un-register and re-register the library. Close all your windows. Run the following script at command prompt.

%SystemDrive%
cd %ProgramFiles%
cd "Common Files\Microsoft Shared\MSI Tools"
regsvr32.exe /u mergemod.dll
regsvr32.exe mergemod.dll