ISSetup.dll Failed Signature verification - MRP Test Tool for Win Server 2012 R2

Hi All,

I am not sure it was already discussed here or not. We are trying to validate our products against Microsoft Platform Ready test tool V4.5 for Windows 2012 R2.
I have tried few things, searched on internet but still un-able to resolve this issue. MRP test fails and it states two of my product ISSetup.dll failed signature verification. My setup package is fully signed and I have also signed individual assemblies (using third-party certificate provider) but somehow I am still getting the error below:

03/22/2014 15:44:43 :: Binary list

03/22/2014 15:44:48 :: The following binaries failed signature verification:

C:\Program Files (x86)\InstallShield Installation Information\{Our Product1-Code}\ISSetup.dll
C:\Program Files (x86)\InstallShield Installation Information\{Our Product2-Code}\ISSetup.dll


Any idea will be highly appreciated.

Kind regards