after starting using DT 4 in German I changed the language for the application to English. I think this might be more useful. The app ui is in English now. But the initially by DT 4 created standard smart groups and smart rules are still in German. Is there a way to get them in English as well?
Also the inboxes are in German as well. Is it safe to rename them to English or will there be any problems later on?
The default smart rules/groups are only installed once (using the current localization) and therefore can be renamed & customized as desired afterwards. Likewise the inboxes.
In case you didn’t add or customize any global smart groups/rules yet, then alternatively you could quit DEVONthink 4, delete ~/Library/Application Support/DEVONthink/SmartGroups.plist and ~/Library/Application Support/DEVONthink/SmartRules.plist and then relaunch the app.