Problem Installing CRM 2011 Email Router on an Old Server, Error : Action Microsoft.Crm.Setup.Common.Analyzer+CollectAction failed

When installing  CRM2011 Email router I got and Error saying  "Action Microsoft.Crm.Setup.Common.Analyzer+CollectAction failed".
I retried the installation and got the same thing.

Fast search on Dr. Google pointed me to the solution:
The problem arises from registry settings left in the system from the CRM 4.0 Email router application.
After the uninstall, not all references to the installed files were deleted from the Registry and you need to manually delete these. Not very hard, but since there are lots of registry settings, remember to use the find menu option ( CTRL+F)
The information is noted by Microsoft in this Knowledge Base artice :
http://support.microsoft.com/kb/2607018

here is what they said to do:
1. execute RegEdit.exe
2. find registry settings:
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Currentversion\Installer\Folders

• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Components\AA525E7FC7F524344B2B2650A4C6D64D 

use find option for AA525E7FC7F524344B2B2650A4C6D64D to make it easier.

Delete any reference to “C:\Program Files\Microsoft CRM Email”. DO NOT Delete anything else, since there are references there to the CRM Server if it is installed on this machine too.

3. find folder  HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Components\68944CFD44299A6449C12100DDA86EE.
use find on "68944CFD44299A6449C12100DDA86EE8".

4. After deleting what is needed, the article says to boot the machine. unthinkable and ofcourse not needed. I had the Email Router installation program standing on the error with "retry" active, I click the "retry" button and the installation continued without the error.