Something weird in the extension display, did the sending app completely crash?
Then please report the issue
There will be an in depth form here shortly but for now please take the following steps
Upload the screenshot and journal file to The File Box, and drop a message to BarryCarlyon via Twitch Whisper for more (pardon the Whisper Answer Phone) or email on extensions[at]barrycarlyon.co.uk
Then, in Elite, restarting the game will start a new Journal file and restart Elite Track if needed