Error 2147504141 - Hub Transport Role Install Failed

From the series "the error is between the chair and the keyboard":

I tried installing Microsoft Exchange 2010 SP1 on a Hyper-V 2008 R2 virtual machine.
The Hub Transport Role installation kept failing with error 2147504141.

The solution: 


1. Install SP1 for 2008 R2 and all available updates.
2. Install corresponding prerequisites.

1) Add role - Active Directory Services
2) Configure Active Directory
3) Add role - Active Directory Lightweight Services
4) Add feature - Windows Process Activation Service
    - Process Model
    - Configuration APIs
5) Add role - Web Server (IIS)
    - Security - Basic Authentication
    - Security - Windows Authentication
    - Security - Digest Authentication
    - Performance - Dynamic Content Compression
    - Management Tools - IIS 6 Management Compatibility (include all items under this service)
6) Add feature - PowerShell
7) Enable Net.Tcp Port Sharing from services.msc.
8) Apply the 2010 Office System Converter (not the 2007!!!!)

Here is an extremely helpful link:

http://www.igetmail.com/how-to-setup-exchange-2010/how-to-complete-the-setup-of-exchange-2010.html#continue

3. Do this before installing Exchange:
Run following commands from Exchange setup CD to prepare AD for Exchange 2010

1) To prepare legacy Exchange permissions in every domain in the forest that contains the Exchange Enterprise Servers and Exchange Domain Servers groups, run the following command.
setup /PrepareLegacyExchangePermissions or setup /pl
2) From a Command Prompt window, run the following command.
setup /PrepareSchema
3) From a Command Prompt window, run the following command.
setup /PrepareAD /OrganizationName:"First Organization"
4) From a Command Prompt window, run one of the following commands:
setup /PrepareDomain


http://www.infotechguyz.com/exchange2010/PrepareADforexchange2010.html
This worked :D. Running the 4 setup commands before installing will make it work like a charm.

4. Continue with the Exchange installation.
Installation should be successful now.

5. Try fixing errors using this link:
http://msexchangeguru.com/2011/08/13/2147504141/
Did not work for me though..