You've got a impressive domain going on there(FERMAR.LOCAL) this is your kaspersky anti-virus giving you a problem here. Try removing your latest update.
Let me know.
I see there are some updates for a Legalsuite program aswell, give this code to one of your programmers to run -
update tbl_debtormaster
set shifts = 0
where shifts is null
update tbl_debtormaster
set underadmin = 0
where underadmin is null
update tbl_debtormaster
set active = 1
where active is null
This update all the 'NULL' values in your Prelegal table to avoid integrity problems..