Kindo: Make absolutely sure that there are no custom .dzip files in the
CookedPC folder, and that
The Witcher 2\CookedPC\items folder is completely empty (or that the items folder doesn't exist at all to begin with). Because those tags should have been changed in the core game with 1.3, and I don't see how it would selectively fail to patch only those files.
thelazyreader: That may be it. However given half my mods involve items I don't know where to put the xml files if not in an items folder.
I know that the weightless recipes schematics mod included this bug before updating to 1.3, so I would reccommend testing your game with anything that mods def_item_schematics.xml removed.
To do this, simply go to cookedPC\items as above, and move the def_item_schematics.xml into a folder called temp or something. This is the only one you should need to change.
If you have merged def_item_schemtaics from several mods (doesn't sound like you have) or it includes changes you wish to keep, you can manually edit it to gain compatibility.
To do this, (you may want to create a backup copy first) open def_item_schematics.xml with notepad or a similar text editor, now go to each entry, and manually delete the phrase SortTypeOther under the heading <tags>.
To insure you do this correctly, you can simply search for the phrase, ie, on the menu bar choose edit->find and type SortTypeOther, then delete each entry as it appears.
Sorry if my explanation was overly simplistic, I don't mean to offend, just making sure I was clear, as I don't know how proficient you are :)
Hope this helps :) Good Luck!