Automation error : Unspecified error (Release.Build())

Team,

I have an executable written in C# where it automates the build process, I'm opening the .ISM file map the component, specify the release, up-to this point well and good the code is executing without any conflicts, but while i try to build the release (Release.Build())via TFS build definition (In build definition i have an activity (C# code) where it kicks-off the executable) it throws the below error. Meanwhile, when I execute the same executable via command prompt, it executes fine without errors.

I went through the below link where they have mentioned if there are more than 1 version of IS installed, we will run into these issues, but, in my machine, i have installed IS 2012, I'm using the component IsWiAutomation18.dll for the build process.

http://community.flexerasoftware.com...?t-195539.html

Error Message : Automation error
Unspecified error
ISWiAutomation.ISWiRelease.BuildInternal
ISWiAutomation.ISWiRelease.Build

What is going wrong. Any helps would be really appreciated as this issue has digested lot of our team's effort :(

Thanks & Regards,
Prasenna