What happened with all the default scannings?
Why do they all disappearing letting only the boot time scanning there?
All of the scans that I had before were carried forward, even if none were carried forward at the very least you should have the Quick, Full System Scan, a ?? custom scan and the Boot-Time scan.
I would try an avast Repair and reboot.
- Same here.
- And if this doesn’t help a clean reinstall.
I’ve tried to repair and it does NOT work.
Any other way to repair it? I hate to uninstall and install again…
And I believe the problem is exactly on exporting/importing settings…
Why are there so many ??? scans in my list? I tried to delete them and they just came back. They take up a lot of space in the scan list.
I’m sure you thought of this already, but try a repair from safe mode. 
- Don’t think so.
- Did it work before importing the settings…??
I haven’t even time to check…
When I need help, I always get alone here…
Most people that have had this or similar blank pages have found the repair to be effective.
Failing that I’m afraid the next step is as suggested a reinstall (clean preferably) or a drive image restore to a point before the problem occurred.
I don’t think you can risk back up/saving the existing settings as that may replicate the problem if you restore/import those saved settings. Or you will have to be selective about what is saved, e.g. not saving the Scan/Task definitions, but back up the rest.