unsupported 16-bit application(helper.exe)

We are building the 64-bit package using Installshield 2012 spring , and we are trying to install the package(setup.exe) While installation we are getting unsupported 16bit application error in helper.exe at certain point of time and our installation becomes unsuccessful. But we can able to install the same setup.exe through command prompt. But we want to install the setup.exe by clicking it and not by passing arguments through Command prompt.

Someone please help me to resolve this problem. We are using Windows7 64-bit PC(InstallShield 2012 spring).


Thanks in Advance...