Yes to all your questions. I've all of the LAMH products including the Editor.

It opens in the editor, but crashes instantly when the Export FiberHair is clicked, with or without the Send to Studio box checked.

Todays error:
DAZStudio.exe caused ACCESS_VIOLATION in module "D:\Program Files\Daz 3D\DAZStudio4\plugins\lamhPlugin.64.dll" at 0033:000000001E6E7313, DzMatrix3::`default constructor closure'()+136003 byte(s)

There's no "solved" version that I know of, certainly not mentioned by "Tech Support". Perhaps I'll try an uninstall/reinstall.