Folder Manager Result Codes

The most common result codes returned by Folder Manager functions are listed below.

`noErr`	0	No error
`nsvErr`	-35	Volume not found
`fnfErr`	-43	Folder not found
`dupFNErr`	-48	File found instead of folder
`dirNFErr`	-120	Parent directory not found
`badFolderDescErr`	-4270	Invalid folder
`duplicateFolderDescErr`	-4271	Duplicate folders for a particular routing
`invalidFolderTypeErr`	-4273	Invalid folder name
`duplicateRoutingErr`	-4274	Same routing for two folders
`routingNotFoundErr`	-4275	No routing set up for folder passed in
`badRoutingSizeErr`	-4276	Incorrect `descSize` field of the folder routing structure