IF "Err" BLINKS ON THE LCD PANEL:
During film advance
If the camera detects a malfunction with the film transport function, film advance stops and Err blinks in the LCD panel. When this occurs, remove your finger from the shutter release button, then fully depress the shutter release button and confirm that Err disappears.
When you press film rewind button to rewind film
If the camera detects a malfunction, Err blinks in the LCD panel. When this occurs, remove your finger from the button, then try to rewind film again.
