When opening an xls file I get the error message “There was a problem sending the command to
the program”. However, if I stop the behavior shield, the xls file opens. Note, when I open the xls file, Excel 2010 has a warning up the top Protected View This file originated from the internet and might be unsafe Click for more details" And an Enable Editing button is next to that. I am using Avast free version 6.0.1000