The Quest List form of release 4.3. can’t be configured through the interface on Dutch version of SharePoint.
Title
INTERNAL: issue in configuring the List Form when using a dutch locale of SharePointDescription
Resolution
This was resolved in a hotfix released, the hotfix can be downloaded here:
32 bit: http://74.93.230.9:8080/QWPSP-4.3Hotfix/Quest%20Web%20Parts%20for%20SharePoint.exe
64 bit: http://74.93.230.9:8080/QWPSP-4.3Hotfix/Quest%20Web%20Parts%20for%20SharePoint x64.exe
User name: wanetquestdownload
Password: que5t9987
Please uninstall the previous version before installing this one.