Please attach at least one map that causes the launcher to crash. I patched several maps with the NHF patcher, and EWA handled them without issues; I can't reproduce the crash.
I patched it with the NHF 0.10 map editor, and EWA 2.6.2 wouldn't launch it with NHF 0.87. Removing the map, even while keeping NHF, allows it to launch. It's important to use the map editor 0.10 that comes with version 0.87.