Thanks aWac9, always very kind!
I followed your problems (disconcerting) with Outerra but, not having answers, I could not contribute to a solution.
If this is the reason why my mod does not work ... even in this case I have no solutions.
Unfortunately, seeing the cubes of the bounding box of the flocks indicates that the program has a stop immediately following its departure to the point of not being able to perform even the very first instructions that delete the bounding box to the user's view ...
Some small tips:
Make sure you have copied the plugin "Expand_env_plugin.dll" (which is placed in the data plugins folder)
in the <plugins> folder of OUTERRA (that of the program).
Check that you are using the latest version (17.0.3.8141) ... it is the only version that I have tested the program ... I do not think it works with previous versions.
If you still do not get the job try to report what kind of error it detects outerra.
Activate the log (alt + l) and read the messages in red at the bottom of the screen (or publish a screenshot).
Who knows if we can find a remedy …