Update all files, items.otb through item editor 0.5 or 0.4, too.
Open Item Editor > File > Preferences > uncheck extended and all options > click browse, and add where is your tibia 8.0 folder> click confirm.
Click, File > open > locate where is you items.otb file from ots > click tools > Update OTB Version > choose 8.10 > uncheck reassign items with unmatched sprites,
wait > File > save.
items.otb file, copy also to rme > 800 folder.