I have been getting this error net.rim.devic.api.system.ObjectGroupReadOnliyExcep tion on my phone

When do you get it?

With the device on, remove the battery for 30-60 seconds. Put it back in and let the device reboot. Fix it?

And please update your profile to show your cell carrier. I know that it isn't "curve". That info is helpful when you have problems/questions.

Read this thread, battery pull appears to fix it plus there are also other solutions there: uncaught exception: net.rim.device.api.system.ObjectGroupReadOnlyExcep tion