Help please - could not find security check box as decribed - am useing setool 1.11 - getting this error -

Patch structure created OK. Determining blocks to read...
New block #0000 added: $44140000
New block #0001 added: $45C80000
Blocks selected OK. Reading blocks: 2
Block @ $44140000 read error. Have only: 00000000 bytes
Elapsed:356 secs.

Is this due to check box and if so where is it?