nueSIPDefault automatically selects the default input method at startup. I implemented it after some people said they wanted to select nueNullKB automatically at startup, and said SIPChanger was not working.
nueSIPDefault works better than SIPChanger in several ways – it is implemented as a lightweight service dll rather than an executable, it waits for a UI event, then sets the SIP, and unloads itself automatically after it is done working.
Download: nueSIPDefault