error looking up user groups

as soon as I login to my iphone 3g, I get this "error looking up user groups" with description
Command 'groups'
failed with return code 127 and error message
-sh: line 30: groups: command not found.

After that it seems all fine.
But, when I installed voice control, I cannot see the app on my springboard?

please help me solve this issue
thanks

I cannot help you with the scriptboard, though the "groups" error have definitely nothing to do with that.