This release of Lunar Magic adds support for ExAnimation on the overworld, more overworld exit path indexes, .palmask files to specify which colors in the palette should be imported into your level, more zoom levels, 8x8 tile fill in the overworld editor, improved Z-order related commands in the level editor, and other small changes and features. Check the "What's New" section of the help file for the full list.
This is very disappointing. With highly edited hacks, those that have Sprite Tool and patches applied, I get an Error in Overworld Data! message saying "Corrupt entries have been detected and filtered in the silent event data" and when changes are made and saved, the ROM itself stays on a black screen after "Nintendo presents". Something should be done about this. This is a tool that has obviously not been fully tested.
@Beboy: That windows SmartScreen blocks tools from SMWC is actually pretty normal. In fact, everything uploaded on SMWC especially those stuff which passed moderation is clean from viruses and malware and since SS blocks even moderated files, you can safe assume, that all tools waiting to be moderated which are uploaded (and made) by... 'normal people' (especially moderators) are clean.