It changes something, however, not all's well for me.
As I wrote to SE support by mail: After startup, SE's reactions on 'cursor_error' have changed in that it tries to interpret the line under the cursor.
However, the regular expressions I have active (ErrorRE.xml) are not recognized until I have performed a 'reset-next-error' (or recompile error.e), as before. Reproducible on every new start of SE.
Regards,
Johan