"error: the system cannot find the path specified" errors in full scan log

The overall comment on the scan is “some files could not be scanned”. THis is with AVAST 6.0.1000 free. THe log contains 6 lines:
c:\program files\alwil software\avast5\defs\11040701\alfo.dll “error: the system cannot find the path specified”
c:\program files\alwil software\avast5\defs\11040701\aswcmnbs.dll “error: the system cannot find the path specified”
c:\program files\alwil software\avast5\defs\11040701\aswcmnis.dll “error: the system cannot find the path specified”
c:\program files\alwil software\avast5\defs\11040701\aswcmnos.dll"error: the system cannot find the path specified"
c:\program files\alwil software\avast5\defs\11040701\aswengin.dll “error: the system cannot find the path specified”
c:\program files\alwil software\avast5\defs\11040701\aswscan.dll"error: the system cannot find the path specified"

I have never seen this in the past. Please help me out as to why this occurred and what it means?

  • Nothing to worry about, those are old virus definitions folders and avast is doing some housecleaning to keep the size used on the hard disk to a minimum. This just happens to have occurred between the time you started the scan and it reaching that old defs folder.