RevEng pointed me to some issues related to using DASM on 64-bit machines. So I took the chance and updated the archive containing all compilers and the zero installation distributions. They now include

  • DASM (2.20.11-20140304/2015-04-04) 
  • KICKASS (V3.39/2015-03-26)
  • XASM (3.1.0) for Mac OS X Intel provided by 0xF

For the exact versions, dates, and platforms, see the section Installing Compilers. I've also automated my build for the compilers process on Windows, Linux, and Mac OS X so that I can provide future updates, hopefully with less effort. I also contacted Mark Schmelzenbach, so hopefully, I can update ATASM to version 1.08 soon.