SFTP Sender - Processing & Archiving file without any extension

Hi All,

We are using SFTP sender channel to process the file.

The challenge is - We are not able to process & Archive the file if the file does not have any extension. (ie : .txt)

We used different wildcard characters also but no luck.

Few more information :

File name in sftp server to process is                : I061_141020_123411

Directory configured in SFTP sender channel   : /IN

File name configured in SFTP sender channel : I061*.*

Archive file on SFTP server                               : /Archive

We  are getting mainly two errors/longs in the channel. : 

     - No new file.. or...

     -  Exception received: java.lang.StringIndexOutOfBoundsException: String index out of range: -1

Thank you.

Ramiz.