b44720d5__Installer_3_7___Release_Notes__Known_Issues
[Component] Toad for Data Analysts Installation: TDA can only be installed into a directory containing English characters [Change Request] 66330 [Known Issues] 
If a non English character is used in the installation directory the Toad for Data Analysts installation will fail with a fatal error. Workaround: When in the Product Selection screen of the Quest Installer only use a destination directory that contains English characters for the Toad for Data Analysts product.
Quest Installer 3.7 – Release Notes
Known Issues