Archiving not active

Hi there! I´m having some trouble in archiving task. I´ve confired my client like this:

Under that Settings i had already created an Option that should make archiving for files not modified for 2 months. I Specified the archive in my computer, and in the advanced tab I marked the first option (Archive locally).

If i try to do: Actions - Archiving - Archive Now, i get a message something like this (my client is is Portuguese):

Archiving task is not active - Do you want to modify the archiving definitions?

When I see the archiving options I´ve noticed that is not saving my alterations.

What can I do? I reinstaled and reconfigured the client, converted to a new template, used load fixup, load updall.