I would delete the two archives that are corrupted:
They seem to be something from Adobe so you may need to reinstall one of your Adobe programs if one of them stops working
Hint with Avast: Right click on the orange Avast icon down near the clock. Probably hidden so click on the up arrow to the left of the clock if you don't see it. Select Silent Mode.
That will stop it from nagging you about paid upgrades and such. You will need to go back in every month or so and Update, Program to make sure you have the latest version (the definition updates are automatic).