[android-developers] When I can't view the file under SDcard

I always get following error. Some times I can view the file under
SDCard, sometimes I will get error

[2010-10-24 12:54:51 - ddms]ADB rejected shell command (ls -l /
sdcard):

--
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscribe@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en