I can't say why the tool crashes, nor make any sense of the txt file.
Dark and mysterious are the ways of the Alternate Data Stream.
The fact that rootkits make use of the ADS - which is part of the OS, may be the reason other partitions that do not have an OS running on them can not be scanned: they do not need to be.
If the OS has access to the other partition or drive, any rootkit files present on that partition or drive that are able to be detected will be detected as part of the OS process. Does that make sense?
I can't explain it much better/deeper than that, because I lack the detailed knowledge to, sorry.
Why don't you try one of the other rootkit tools, like TM Rootkit buster, or Darkspy (mcafee), or the Prevx Gromozon (specialist group of infections)
More links
here.