When executed from the command line, ImportOmatic doesn't provide a great deal of feedback directly on the command line itself, instead relying on writing any error information to the "Error" file. What would be even better would be if error information was written out to the command line as well, so that if you get immediate feedback on the error. Not sure if this is by design (perhaps to prevent disclosure of potentially sensitive information on the command line), but in particular when executing IOM.exe programmatically, feedback on the command-line would be much more useful than having to search for and parse the "Error" file to determine what went wrong.