|My sandisk was locking my camera up because I tried downloading some pics from my laptop.|
I found this under FAQ on sandisk web site & it worked for me.
Make sure your card is unlocked
Insert your card into laptop
open disk Management by right clicking on My computer & select manage
Under Storage, click Disk management on the left pane,
In the right pane find your memoy card,
right click on the device you want to format then select format.
If a warning comes up click yes or O.K.
I left all the formatting options as they
click o.k. to format.
Doing this I was able to see my memory card in my camera without it freezing it up. I then formatted it in my camera.