Hi Troops,
I used to use Online Armor, so I will try to help...
-When you open up the program you will see a menu on the left,
-Click on programs
-You should see the list of programs in the main section of the window --> find entries for avast! - I'm pretty sure that they are labelled avast!
-Click on them (I think you may be able to do multiple with 'Ctrl' button, but not sure)
-At the bottom, I think there are the options (ask,allow,deny...)
-Once you have selected the avast! entries, click on allow and they should change to green.
You may need to do this for the Autoruns section also.
Once this is done, try a re-boot and see if avast! starts up.
-Scott-