Keyboardlayout setting is working again. Some mis-programming sets it back to "USA (Standard)" layout, if another layout has been selected. This means, if you switch back to an older version of DOSBox, the current setting remains, even if the older version of DOSBox doesn´t support the current selected keyboard layout.
In the Preferences window, you can now *remove* the language file from the Dapplegrey settings, too. Until now, the only option was to select another file.
Please notice the updated ´Dapplegrey Troubleshooting´ PDF file about using language files with DOSBox.