Map editor bug.

Hello. I have the Heroes III: Restoration of Erathia maps. I have the Heroes III: The Shadow of Death map editor. I use the "The Shadow of Death" map editor because it has the ability to automatically fill a selected area with obstacles (used when drawing), which is not available in "Restoration of Erathia." However, this editor has a bug that causes it to crash. If the filled area includes a certain "buggy cell" (or a group of them), a system error occurs, and the program closes. This is very annoying because many maps of size M and larger often contain such cells. Because of this, I cannot edit many maps in the specified way, and I have to choose a different, "working" map for editing, instead of just picking the "first one I see" (for example, "Pirates"). Of course, you can also draw the squares manually – place the obstacles yourself. But it's very frustrating when you're drawing, and suddenly – crash when filling in another painted area. Thus, instead of working on the "Pirates" map, I have to deal with "Ascension," which is far from being at the top of the list. The "Pirates" map can be made manually, but it takes noticeably more time. It's sad to waste my time because of some error in the program. Has anyone encountered this? Are there any solutions? I repeat: I am using a map from the very first edition, and the editor is already the third version.