Actinic 7 Products Disappearing in Software - Help!!

[June]

I am using Actinic 7 Developer and am at a loss - whole sections of products in the tree are disappearing
Everything was fine last night when I uploaded the site and closed the Actinic and PC down for the night
When I reopened Actinic this morning it gave an error message on opening - unable to locate product. When I looked at the tree, only the product sections were there and all the products had disappeared from some product areas. It was also showing the wrong theme template

Luckily I had a backup which was fine, so I created a new site and imported the backup, did a preview, everthing as normal

I closed it and reopened, exactly the same problem with the NEW SITE, many of the products has disappeared and a different template

This has never happened before - could a virus cause this or could it be a bug in the software

Any ideas very welcome - PLEASE HELP, as I am unable to upload the site now

[Duncan Rounding]

When you say you imported a backup I presume you mean you imported a site snapshot. You could also try Housekeeping|Backup|Recover database which will revert to your last database backup.

[June]

Yes, I did import a snapshot to the new site and the same problems occurred there, when I closed the software, backed up and reopened. I have also tried recovering the backup as you suggest but this was showing exactly the same errors.

[wjcampbe]

Open the whole tree just in case you accidentally dragged the pages and created a new deeper level of subsections.