creating a local copy for editing

[SPNIOrganization]

Hi,
I have the subscription account. I published a hosted editable feature service and when I was trying to make a local copy for editing on my desktop 10.1  I recieved the following error: " a local copy could not be created. input buffer is empty or contains invalid UTF8 charecters.; state: Empty;Buffer:"

What does it mean???

Thank you,
Dikla.

[SPNIOrganization]

Thank you mike,
I will try to check again the feature, maybe copy it to a new empty feature class in a new GDB.

If the problem continue I will post a new thread with a link to the service.

Dikla.

p.s: how will I now when you fix the bug?