I use Avast for my laptop, cell phone & my tablet. Yesterday I noticed that something has happened to Avast on my laptop. When I
click on the Avast app I get the following message: “The program can’t start because HTMLayout.dll is missing from your computer. Try reinstalling the program to fix this problem.” I do not know what to do to fix this. I am "technology challenged. 
The familiar “Orange Ball” is missing. When I first heard of Avast 8 years ago I used the free one but Avast is awesome I began a couple of years ago to pay for it since it offered more protection.
Please Help
Sharon in Louisiana