After applying a HotFix OpenEdge Servers do not start

OpenEdge components do not start after applying an OpenEdge Hotfix.
Related OpenEdge server product log files are not updated
Database does not start after applying OpenEdge Hotfix
Ubrokers do not start as AdminServer fails to start
proadsv -start doesn't error but instantaneously returns back to the command prompt with just the version number.  
The admsrv.log, cmdplugin.log and ads0.exp log files are not touched.  

All OpenEdge components were shutdown before applying the Hotfix
Permissions have been verified on executables

First download the appropriate Hotfix from ESD for the current install:
 
For example:

• Hotfix 11.5.1.016 for Windows 64-bit OpenEdge 11.5.1 installation: PROGRESS_OPENEDGE_11.5.1.016_WIN_64.zip
• Hotfix 11.5.1.016 for Windows 32-bit OpenEdge 11.5.1 installation: PROGRESS_OPENEDGE_11.5.1.016_WIN.zip

For further clarification refer to Article:

• 00021245, How to tell if Progress OpenEdge 64-bit or 32-bit product is in use?    

If in doubt, contact Technical Support to assist you further.

To revert the incorrect HotFix media:

While Windows has been used in the examples below, the same applies for all Operating Systems certified by the OpenEdge version in use.
For further clarification on applying a Hotfix refer to Article:

•  How to install Progress/ OpenEdge Hotfix   

Option 1: If an installation backup was taken before applying the Hotfix, as advised in the associated Hotfix Readme:
Revert to the copy of the install backup then re-apply the correct Hotfix for the OpenEdge bit version + Service Pack

Option 2: If an installation backup is not available:

1. Uninstall OpenEdge 
2. Reinstall the OpenEdge major-minor version eg: OpenEdge 11.5.0 for Windows 64-bit
3. Reinstall the latest Service Pack if applicable eg: OpenEdge 11.5.1 Service Pack for Windows 64-bit 
4. Apply the appropriate Hotfix eg: OpenEdge 11.5.1.016 Hotfix for Windows 64-bit