Hi Kovid, tried again and again Mac restarted. I ran a fault diagnosis which showed the following. I am not very technical so any pointers to what I should do would be greatly appreciated. Thanks
Fri Oct 4 12:13:57 2019
*** Panic Report ***
panic(cpu 1 caller 0xffffff7f8fd4437b): "Kernel stack memory corruption detected"@/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-4903.271.2/libkern/stack_protector.c:37
Backtrace (CPU 1), Frame : Return Address
0xffffff92261fb3d0 : 0xffffff800b3ae6ed
0xffffff92261fb420 : 0xffffff800b4ea185
0xffffff92261fb460 : 0xffffff800b4db8ba
0xffffff92261fb4d0 : 0xffffff800b35bb40
0xffffff92261fb4f0 : 0xffffff800b3ae107
0xffffff92261fb610 : 0xffffff800b3adf53
0xffffff92261fb680 : 0xffffff7f8fd4437b
0xffffff92261fb800 : 0xffffff7f8fd42561
0xffffff92261fb850 : 0xffffff800b88af04
0xffffff92261fb8b0 : 0xffffff800b601e66
0xffffff92261fb900 : 0xffffff800b622ac3
0xffffff92261fb980 : 0xffffff800b60c3b7
0xffffff92261fbbc0 : 0xffffff800b60ced2
0xffffff92261fbf40 : 0xffffff800b9ba5ed
0xffffff92261fbfa0 : 0xffffff800b35c306
Kernel Extensions in backtrace:
com.intego.virusbarrier.kext.realtime(1574.0)[EC18B1EA-9BFE-3EFC-9B7C-E9E344D240A0]@0xffffff7f8fd41000->0xffffff7f8fd45fff
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