Resolution:
For outbound EZcomm file poller, the specified directory should be:

&ltDir>/EZcomm/*.*   (example:  "c:/temp/outbound/EZComm/*.*")

and the files should be placed in:

&ltDir>/EZcomm/&lttpname>/&ltoperation category name>_&ltoperation name>/  (example C:\temp\outbound\EZComm\bcftps\TestCategory_TestOperation)

For inbound, the FILE directory should be set to:

&ltbaseDir>  (example c:\temp\inbound)

and the file shoud be placed in:

&ltbaseDir>/EZComm/&lttpname>/&ltoperation category name>_&ltoperation name>/  (example C:\temp\inbound\EZComm\bcftps\TestCategory_TestOperation)