Steve wrote:

> In the example code CFArray of Dicts Proj it writes CFArrayOfCFDicts FILE to a folder CFArrayOfCFDicts FOLDER on the Desktop 
> double-clicking this file opens up Property List Editor [ if installed ] and you can inspect the contents of the file
> If the file CFArrayOfCFDicts FILE  becomes corrupted or is the wrong file type, the example code will crash.
> How should I preflight the file type before opening it and possibly causing the crash?

The plutil command checks for syntax errors in a property list.

$ plutil /Users/rdp/Desktop/CFArrayOfCFDicts\ FOLDER/CFArrayOfCFDicts\ FILE 
/Users/rdp/Desktop/CFArrayOfCFDicts FOLDER/CFArrayOfCFDicts FILE: OK

$ plutil /Users/rdp/Desktop/nonsense 
/Users/rdp/Desktop/nonsense: Unexpected character i at line 1

Robert P.