HL7 Accelerator 2.0 for BizTalk 2006 R2: Installation issue

I am running BizTalk Server 2006 R2 Developer with Share point services (2 and 3 installed in Farm mode) on a windows 2003 Server machine running SQL 2005 as a backend.

I am done with BizTalk installation and Configuration. However when I’m trying to install HL7 Accelerator 2.0 I was gettnig errors during setup load saying “Unable to install BizTalk becuase BizTalk is not configures or the service account is not the part of Administration account”. So I added service account to BizTalk Server Administrator and BizTalk Server Operator as well.

By doing this I’ve managed to by pass the load time warning, however on the HL7 Accelerator 2.0 Auditing and Logging Database Information Screen I am accepting the default value for HL7 Database name (or even if I choose any other name) When I press next the Setup do nothing, not even block me from keep pressing Next.

I’ve tried this using every possible entry i.e. using Typical or Custom installation option by signing in with the BizTalk Server Administrator account. But this Next button does nothing at all.

For this I tried to download a fresh installer of HL7 Accelerator 2.0 but I can’t find it on Microsoft site.

Any one has any golden words to say or any resolution? Am I missing some thing or does Microsoft missed some thing.