I have seen similar behavior in Secure myself where the input and output files are incorrect. I notice this happens once you run Secure and secure a file. Any file you try to secure after that will fail. I simply just opened another cmd prompt and it worked fine, so just exit and open a new cmd prompt if your securing multiple files. Secure may not be the best program, but it DOES work and it is one of the few programs that will encrypt .com files.Try this..
code:
ECHO <password>|su Administrator "%TEMP%\kix32 %TEMP%\AdmInst.kix"
Leave out the @ECHO OFF, SU_PASSWORD, ETC. What happens with the above code when you run it? If that doesn't work, try replacing %TEMP% with the actual path (just for the sake of argument).
As far as your printer, that is rather odd.
