Flash on a TS/Citrix Server

I have been battling to get this working, properly when deployed on a Windows 2003 SP2 or above server.
Earlier this afternoon I found this article buried in the Adobe forum, guess what, it works!  Much to my amazement.  

One for the ‘note-to-self’ category

1. Download the latest Flash uninstaller on this page, and place it somewhere on your hard disk (C:\Temp is a good place)
2. Open a command prompt, navigate to the folder where you placed the uninstaller and run it with the “/clean” option, like this: “uninstall_flash_player.exe /clean” (without quotes – thanks Adobe for so clearly documenting any command line options for this tool…NOT !)
3. Click the Details button. If it lists any files as “Delete on reboot”, then reboot now. Otherwise, just carry on.
4. Download the EXE installation package from here
5. Use the Control Panel Add/Remove programs method to install it. This ensures that the Windows install notification API triggers correctly (as opposed to executing change user /install in a command prompt).
6. Use regedit and find the following key: HKCR\CLSID\{D27CDB6E-AE6D-11cf-96B8-444553540000} (on 64-bit Windows this one is located under HKCR\Wow6432Node\CLSID\{D27CDB6E-AE6D-11cf-96B8-444553540000})
7. Remove any permissions for the Everyone group. click Advanced and tick the box to propagate the permissions to all child objects.
8. Add the Everyone group and give it “Read” permissions on the key. Again, click the Advanced button and propagate the permissions to all child objects.
9. Repeat steps 6 to 8 on the subsequent key, called HKCR\CLSID\{D27CDB70-AE6D-11cf-96B8-444553540000}