When connected to a 10g Oracle database via Direct Connect and then trying to execute a stored procedure or function, the following error occurs:
"Object reference not set to the instance of an object"
After clicking OK nothing happens and the procedure\function does not run.
Use the TNS method via TNSnames.ora with native Oracle Client to connect to Oracle and run\execute procedures and functions.
Waiting for fix to be released in a future version of Toad for Data Analysts.