The kinit included with KfW doesn't seem to like a Windows path to a 
keytab file. eg:

   kinit -kt d:\my\path\to\keytab.file

It seems to be OK with a Windows path as long as it includes UNIX forward 
(/) slashes, but it doesn't like a drive letter.

So...  while this appears to work:

   kinit -kt /my/path/to/keytab.file

this won't

   kinit -kt d:/my/path/to/keytab.file

It would preferable if it accepted either forward (/) or backward (\) 
slashes... but it really needs to accept a drive letter.