To enable DTerm to work with documents in different applications:

Choose DTerm > Preferences to open the preferences window.

Choose the “Accessibility” preferences tab.

If the window shows the Accessibility API as being “disabled,” click on the “Show Universal Access...” button. Check the “Enable access for assistive devices” option near the bottom of the Universal Access window.

If DTerm's preferences window shows DTerm as being “not trusted,” click on the “Make DTerm trusted...” button. Enter an administrator's username and password when prompted. If successful, DTerm will ask to relaunch so the trust changes can take effect.