In the HTML Schema Doc Generator, ifafolder is created (ad hoc) when creating the .html file in the Index File Name field, at the end of the document generation, the following message is displayed:
Cannot create file c:\<folder_path>\><file_name>.htm. The system cannot find the path specified
Create the folder first, drill to thefolder and type the file name.
Waiting for fix in a future version of Toad for Oracle.