The parent website that script belongs to looks like it's been mothballed, which would explain the lack of response (it doesn't look like it's supposed to be available to the public, so you might have inadvertently gained access through directory listing - which should be turned off normally). Depending on how complete (robust) it is, it might be a better option to use the older versions of Blender to import the ASE where there are stubborn issues, at least that way you can save the file and re-open in a newer version of Blender, fixing issues in the process. Nice find though.