jfavors55,
This issue has come up before. The solution was, ""Err 30" indicates that malfunctions related to the power source have been detected. This could also be a shutter malfunction.
The solution was to take your battery out and clean the contacts with a microfiber cloth, even if they look clean. Leave your battery out for at least one minute. Re-insert your battery and try again. If you still get the error, try another battery.
If the problem persists, you'll have to get your camera repaired.
Steve Thomas
