b44720d5__Installer_3_7___Release_Notes__Known_Issues
[Component] Knowledge Xpert Installation: If you use the buttons during a fresh installation into a Unicode location [Change Request] 8022 [Known Issues] 
When installing Knowledge Xpert, if you navigate to the 'Product Selection' page and then use the to the product selection page again, you will be prompted to remove the Unicode characters from the install location. This will cause the Knowledge Xpert “Engine” to be installed incorrectly, causing an installation error. If you do observe this behaviour in the product selection page either: • Uncheck Knowledge Xpert and continue installing your other selected products, then re-run the Toad bundle and install Knowledge Xpert into a non Unicode directory or • Cancel the install and re-run the Toad bundle and install Knowledge Xpert to a non Unicode directory *Note: The 'Install Location' screen is only visible when installing a Toad bundle onto a clean machine (i.e. no previous installation of Toad are on it). If you already have a previous version of Toad on the machine, then this Unicode installation issue is not applicable to you.
Quest Installer 3.7 – Release Notes
Known Issues