I don't know what version of 3dsMax you use but there is a couple here for version 7, 2011 and 2012 https://github.com/paulvortex/MaxAseImporter There is ase import for Blender as well, you could use it as a conversion tool if nothing else. found an online model converter that supports ase input ht...

For 3ds Max I can't find an importer for .ase yet there is an exporter built in. By any chance does someone have an importer / could make one? Having it would go a long way for towards my research of a format nobody can figure out.