The thing I don't like about Amikit is the register box for Directory Opus, it stops there instead of loading right up.
You can use MorpheuZ program (located on desktop) to switch from Directory Opus to Workbench or Scalos environment, which doesn't require any registration.
I refuse to buy a windows version of Directory Opus because I feel no need for it. Not only that but I never did like Directory Opus, I always preferred Disk Master.
Buying Windows version won't provide you with Amiga Directory Opus serial anyway.