Hello SS,
I changed the path AUDIT_FILE_DEST to the D:\ disk but even so the SWPM tool stops with the same error. I started a new SWPM from the scratch but it show me the same error 
Tell me one thing... do you think the SWPM loaded some parameters (old parameters from the your previous runs) and maybe it have the I:\ disk information in some file in the C:\Program Files\sapinst_instdir directory?
Can I delete this directory (C:\Program Files\sapinst_instdir) and then start again from the scratch the SWPM tool?
Best regards
João Dimas