Multiple Commands from local Windows to ILOM with PLINK

Hi

I'm trying to use PLINK for SSH-connecting to ILOM for collecting Information via CLI-Commands.

What I was doing ist:

plink SERVERNAME -l USER -pw PASSWORD (Windows 7)

this is working fine

now i will  use the following, which works fine when typing by hand on the ILOM

show ./system/open_problems

as a local windows script file calling with PLINK. I was trying many variations with a textfile using -m or not, but alway get errors like

shell: Invalid credentials

plink: unable to open command file "c:\temp\command.txt" (the local path is right)

please help

torsten