After Toad for Oracle had been working properly, launching Toad for Oracle returns:
ExceptionLog7.Init (Location: (0010E7CC){Toad.exe } [0429F7CC] EModules.TEurekaModulesList.AddModuleFromFileName (Line 625, "EModules.pas") + $14)
Corrupt program.
Uninstall and re-install the application.
The latest version of Toad for Oracle can be downloaded here.