For Windows Vista 32-bit user, ensure that the command prompt is at C:\Windows\System32\ folder. For Windows Vista x64-bit, issue the following command to change to 64-bit folder in order to use the correct DLL files: cd ..\SysWow64
Type the following command and hit Enter: regsvr32 jscript.dll
and optionally (if problem persists),
regsvr32 vbscript.dll
For Windows Vista 32-bit user, ensure that the command prompt is at C:\Windows\System32\ folder. For Windows Vista x64-bit, issue the following command to change to 64-bit folder in order to use the correct DLL files: cd ..\SysWow64
Type the following command and hit Enter: regsvr32 jscript.dll
and optionally (if problem persists),
regsvr32 vbscript.dll