Error replacing current file

Possible reasons:

1. the TMP and TEMP system variables are not defined in the system, or the directories to which they point do not actually exist on disk
   - please make sure the aforementioned variables in System properties - Advanced - Environment variables actually point to existing directories.
2. the file \Program files\Eset\nod32.000 is corrupted for some reason (e.g due to a disk error)
   - check the disk for errors using scandisk (Win 9x/ME) or chkdsk (Win NT/2000/XP/2003)
   - rename the file nod32.000 (you might need to restart Windows in Safe mode first)
   - reboot the machine (you'll get an error loading resident protection, just ignore it)
   - update NOD32
   - reboot the machine
3. the file \Program files\Eset\nod32.000 is locked by another application
   - reboot the machine and try to update NOD32 again