FAILED TO ACTIVATE SUBSCRIPTION.    Server Reply corrupt. Please make sure you've registered this machine. Then open a product contained in this subscription to attempt to activate it.

In HydraKEY, the "Authorization Number" is displaying a number that is not yours or you are receiving software that is not yours, and failing to Renew your own Authorization Number, or get your own software.  In the HAM log, visible only to Hydratec Employees, the Authorization number is being used on machines at different companies.

Unhandled exception has occurred in your application. If you click
Continue, the application will ignore this error and attempt to continue. If
you click Quit, the application will close immediately.
Could not load file or assembly 'Newtonsoft.Json, Version=13.0.0.0,
Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed" or one of its
dependencies. The located assembly's manifest definition does not match
the assembly reference. (Exception from HRESULT: 0x80131040).

When a new version of HydraKEY comes out, if it is installed within the first few hours of release, you may not get the updated version or you may continue to get the message to upgrade, but to the previous version.

No error, but when trying to open HydraKEY, the windows loading circle appears but the application doesn't ever open. 

HydraKEY icon disappears from the desktop when trying to run the application after install. 

The setup was unable to automatically close all requested applications. Please ensure that the applications holding files in use are closed before continuing with the installation.

Files in Use. Some files that need to be updated are currently in use.

Authorization Updater Failed.

Failed to Renew. Answer from server was incorrect.

Failed to Open Mail program on local machine.  You don't have a default mail program set on your machine or are using only online mail.