Why my custom prerequisite is saying it is corrupt?

Error:

Verifying file hash

Error: Setup has detected that the file '.....XXXXX.msi' has either changed since it was initially published or may be corrupt.

Solution:

Option 1: Uninstall .NET 4.5 and work with .NET 4.0 only

Option 2: Sign your package files with a code-signing certificate to avoid a defect introduced in .NET 4.5

References:

http://stackoverflow.com/questions/13073915/clickonce-prerequisite-error-published-installer-may-be-corrupt

http://msdn.microsoft.com/en-us/library/ms165429.aspx