Red 'Old Data' widow on start-up

Everytime I turn-on the PC I get a window advising that I am using and old data (VPS) file. Code 080331-0. The window requests that I update. When I click this link Avast tells me I am up-to-date. But the window keeps reappearing. I have uninstalled and reinstalled Avast 4.8 to no effect. The background window colour is red not the usual green. Please advise how I can get rid of this irritationg pop-up window and if the softeware is working properly

Can you check if your system time and date are correct?