MIRROR FOR THE HERO

There is no need to mislead people. The script with new map layouts, as well as the symmetrizer script itself, are installed separately and do not depend on the version of the map editor.
The only difference related to the transition to version 0.51 is the presence of the Inferno patch in it. Accordingly, when installing the set of symmetrical templates, you do not need to copy the Inferno patch files script90.erm, script90.ers, Building.txt to the game folder.

For information: version 1.4.0 of the symmetrical template has been released: http://www.forum.heroes.by/viewtopic.php?t=863&postdays=0&postorder=asc&start=0. It includes two new templates - symmetrical versions of 8mm6a and HyperCube.
Also, the h3dm1 template has been changed: now the treasures have a random racial affiliation.