AppSync: Following an upgrade to version 4.4, AppSync fails to run a KSH Korn shell script

The following is seen in the Service Plan events:

Pre-copy script,e56351e3-10ef-4cff-b9b1-c0298d0bfdcb,HST_000112,Overload,User script /usr/path/bin/my-precopy.ksh failed to run on host ProdSource. 

Ensure the script has correct extensions(.sh or .pl), no invalid characters in filename/filepath and script parameters.

The similar error is seen in the AppSync Server log:

INFO [Thread-280 (ActiveMQ-client-global-threads)] [com.emc.archway.commands.host.RunHostUserScriptCommandBean] [Overload] [] bbe273ef-d05e-4b2c-a594-7148588bdb13->>> Filename contains either invalid characters, multiple dots or the file extension is not .sh

The code was filtering out KSH scripts as being valid.

A hotfix exists for AppSync 4.4.0.0.
Note this article when calling in a service request.

For versions post 4.4.0.0, see the appropriate release notes to determine if the issue is resolved.