Richard,
Sorry that you are seeing this issue.
Can you please shut down Eclipse, delete the engine folder located in your user home directory/.codemix folder and restart Eclipse? This will extract a fresh copy of the engine. If you are still seeing problems with the engine, then please reach us via Live Chat ( Help > CodeMix > Live Chat) for a quick diagnosis. We have some tools available via Live Chat to help us quickly fix the problem.
If you cannot initiate a chat session at this point of time, then please share with us the workspace log file which is located at workspace dir/.metadata/.log to help us investigate further.
Apologies for inconvenience caused.
–Swapna
Genuitec Support