Toad Script Runner (TSR) not starting from SQL Editor - Error: 'Socket Error Code: 11001($2AF9))' and 'No Oracle Client' message shown in login window. (4241744)

Toad Script Runner (TSR) not starting from SQL Editor - Error: 'Socket Error Code: 11001($2AF9))' and 'No Oracle Client' message shown in login window.

When trying to start Toad Script Runner (TSR) from the Toad SQL Editor, it is not possible to open it, or connect.

The error message:
'NET: Network error (Unknown host 'your_tnsnames_connection'. Socket Error Code: 11001($2AF9))'

Also, there is a message in the login window of TSR that stated 'No Oracle Client', as if it is not detected, even if Toad and SQL*Plus connect fine and can run the same SQL statement.

Open Toad Script Runner, and go to the menu: Edit | TSR Options | Oracle  - and tick 'Use Oracle Client' tickbox.

Then restart Toad and TSR, and follow the steps to run a statement in TSR, and the connection will use the Oracle Client on your machine