Thanks Asyn
To my mind Malwarebytes is not compatible with Avast unless you set the exclusions.
Setting exclusions is a real pain in the neck and i would rather not do it.
I have had Avast for a long time and never had any problems with viruses.
I just added Malwarebytes because i thought it would give a bit more protection which it did with the version that i was using.
It is only with this new version that has caused problems with Avast.
I believe that if a program doesn't work,dump it,don't waste time trying to make i work.That leads to frustration.
Thank you for all your help it really is much appreciated.
Best Regards
Philip