The program to open avastlic files is Avast5.
what
I always open my *.avastlic files with my avastlic reader >>> hxxp.www.avastlicreader.com
always worked fantastic so far
(runs well too with the firefox plugin, but secunia says it's unpatched
)
edit: btw, I didn't get my avastlic newsletter today, I wonder what's up, may be they're down for maintenance