Output File Path is not a valid Windows filename or does not exist
Cause : The output file name you have set is not a valid Windows file name. Either the name does not follow the Windows file name syntax, or the path where you have set it does not exist.
Consequences : You must clean up the filename before you can generate a diary.
•Let Q++ generate an output filename : Generates a composite file name. Before using this option, make sure you have set the language(s) and year properties, so that the name generated by Q++ is useful.
•Set the output filename yourself : Sets this property to edit mode so you can set a file name yourself. The allowed characters are : a..z , A..Z, 0..9, .(period), :(colon), _(underscore), -(hyphen), #(hash), \(backslash), ~(tilde).
Also make sure that the problem is not that the path you have indicated; this message will be triggered if the output file's path does not exist.