If nothing inside the For Each File container is logging any progress, the most likely explanation is that it isn't finding any files.

You can get more details by adding a script task (inside the For Each FIle container) with calls to either Dts.FireInformation or Dts.Log.  You can pass the file variable into the script task as read-only and generate a message.

Your logging setup must include Information events.  Dts.Log is simpler to use, but it requires that you turn on the ScriptTaskLogEvent for each script task.