Default Camera only work with class10 external SD - Android Revolution HD 9.1

Hello I just installed Android Revolution HD 9.1 ROM, and the default camera application is not working because my external SD card is not class 10. It shows me a message with the restriction.

I don't want to use external memory to save the camera photos!

I remove the external SD card, reboot the phone, but camera still doesn't work.

Appreciate your help, since I don't want to change again my ROM