visual studio 2008 - "Unrecoverable build error" on any MSI Setup project

Question

Some time ago I got this error when building ANY Visual Studio Deployment project.

"Unrecoverable build error"

I thought my VS installation was corrupted or I deleted some important files, but ...

Answer 1

...all I had to do was.

Close down Visual Studio.

Start, Run or WIN+R, type cmd, OK.

regsvr32 "C:Program FilesCommon FilesMicrosoft SharedMSI Toolsmergemod.dll"
regsvr32 ole32.dll

For x64 bit machines

regsvr32 "C:Program Files (x86)Common FilesMicrosoft SharedMSI Toolsmergemod.dll"
regsvr32 ole32.dll

Warning: you MUST run the command prompt in Admin Mode!

Close Command Prompt.

Open up Visual Studio and try rebuilding your deployment project! It worked for me!