"Error: Designer x64: The Designer x64 reported: Error running Event #1: The external program "C:\Program Files\Alteryx\bin\AlteryxEngineCmd.exe" returned an error code: 2: The system could not find the environment option that was entered. (203)"
These macros allow you to convert IP addresses to DWORD formatting and vice-versa for IP validation. These can be used to determine if an IP address was part of a range and, if it was, create two new ranges on either side of it.
How to change the versioning of your workflow to be compatible with your current version.
Caution, this procedure will not always yield a workflow that runs the same way the original one did in a more recent version of Alteryx. You may need to tweak things if any of the tools had changed.