object reference not set to an instance of an object

1) Run regedit.exe;
2) Browse to the location "HKEY_CLASSES_ROOT\CLSID\{F9AE8980-7E52-11d0-8964-00C04FD611D7}" in the tree;
3) If there is a child node in the tree called "ProgID", then you are indeed experiencing a different problem - let me know if this is the case.

Otherwise, follow these steps to modify the registry:

1) Right click the node and select "New > Key";
2) Enter "ProgID" as the name;
3) Go to the main window and double click "(Default)";
4) Enter the value "MSIDXS.1";

Now if you run Visual Studio, it should be working.


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Regards,
Chittaranjan Satpathy
+919973661801