With my friend we did a small "investigation" about the German-English problem. All the solution is in the BR218_enginescript_dev.out file. Till the version 5 works correctly, from v6 there is an error. From the first sight you see the size difference (new is smaller). We do not know anythink about the changes, but when you copy "old" (bigger) file and overwrite the new one, all works OK (from the message system only of course - I cannot speak about the functional differences) So most simple "upgrade" would be in posting the new script file(s) - there are two: BR218_enginescript_dev.out and BR218_enginescript_dev_V.out - only and all the "time consumpting" problem will be solved. Of course that the decision is on vR...
The question about the backward compatibility is - as it seems to me - called only from human mistake in the programming process.