Upgrading bug: BizTalk 2010 to BizTalk 2013 R2

Hi,
Upgrading has been made easy with newer versions of BizTalk. I recently upgraded the BizTalk software from 2010 version to 2013 R2.
Here are few screenshots....Important is the last screenshot.. :)

Here it talks about Pre-Actions required.
Stop WorldWide Web Publishing Service.
Start Enterprise SIngle SignOn Service.

Since I had selected to install Developer Tools also...it gives me an Error with missing prerequisites.
I installed Visual Studio 2013 and then continued on.

"Buckle your seatbelts....there are no Airbags to save you in this crash ride".
Microsoft will not rollback the databases if the Upgrade fails.
I did ensure that I had a backup of all the databases.

Forgot to stop RuleEngine Update Service.

And Finally the surprise...........

Seems Microsoft forgot to rename the Folder from "BizTalk Server 2010" in Program Files to "BizTalk Server 2013 R2" but product got upgraded successfully.

Hope they will fix this soon ;).

BizTalk 2013 Installation Bug: Enterprise Single Sign-On Error

While Installing BizTalk I received the following Error that Enterprise Single Sign-On should be installed manually.

Well this had not occured while installing previous versions of BizTalk. So I was a little bit curious as to what am I missing on the Server.

So I started installing the redistributable prerequisites manually as this is what BizTalk installation does first.

What I noticed is 

After installing .Net Framework 4.5 from the .cab file I tried to run the BizTalk installation again as normal and selected the .cab file I downloaded.

And it worked fine and BizTalk 2013 was installed successfully with Enterprise Single Sign-On and all other features.

So seems Enterprise Single Sign-On  installation needs .Net Framework 4.5 to be in  place before it can be installed and BizTalk Installation is messing it up somewhere while installing the redistributable prerequisites.