Iomega REV & Automatic Backup Pro, incremental backup won't work

Hello

I have Iomega REV ATAPI on WinXP machine.

I have made a scheduled job for Iomega Automatic Backup pro to backup 12
folders from mapped network drive (iomega nas p400u) like F:\SAMPLE,
F:\SAMPLE2 etc. Backup is scheduled to start every workingday at 11:00PM

First backup works fine, and it backups all 13GB, but following
incremental backups only start for a second or two and log file gives
error "toiminto hylättiin" that could mean something like "operation was
rejected" or "operation was cancelled" and it wont backup new or altered
files.

Incremental backup won't start even if i try to do it manually.

I have uninstalled iomega sw and downloaded newest versions from iomega
website, with no luck.

I can create, alter & delete files with notepad on REV disk.

Any ideas how to continue?

TIA

Juha