"Unable To Scan"

how should i interpret the “unable to scan” entries shown in avast3 attachment? how can i decide whether they are potentially dangerous (i have no idea what the orange-boxed gobbledygook files are)?

:slight_smile: Hi Neal :

 Your Question and the 1st "Image" you Posted are answered in the "FAQ"
 I told you about in the "Private Message" you sent me, specifically at
 http://forum.avast.com/index.php?topic=33147.0 .

 The 2nd "Image" of Avast's GUI indicates you have NOT "activated" our
 "VRDB" ( Virus Recovery Data Base ) and it would be wise to do so ;
 RIGHT-click the "a" Icon in the System Tray ( like you do to go to the
 "Log Viewer" ) and select "VRDB", then select "Generate VRDB Now" and
  soon thereafter select one of the 2 Settings below it .