I get that if my SD card potection switch is not all the way up
also make sure your cameras are off before removing them
last thing I can think of is just the age of the card
I have one card that the cams nor the pc will read
other then that I just don't know
Remember when posting what may seem innocent to you may not to others,
text shows NO emotions so please,,, don't take it personal & automatically go on the defense.
Take it w/ a grain of salt, take it as a joke or just let it go.
"If George Washington was asked for his I.D. do you think he just wipped out a quarter?"