Post deployment issues in windows application folder structure

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C#3.0

C#

Hi Guys....

I have created a windows application and a setup project for the same using VS2010. the setup project has some default folder structure which has to be installed on the target machine. everything works fine, but after installation there is a requirement to add some more folders, when i do it application is getting re-installed again and the defualt folder structure is reverted back... I dont know what is happening. but i need to stop re-installation. Please help ASAP.