Hi Sarah,
Hopefully we will be able to get Adiabat_1ph working on your system but there are a couple of questions I have first...
- Have you installed Perl? You'll need it to be able to use run_adiabat.pl, which makes adiabat_1ph.exe more manageable. If you need Perl for Windows then go to http://www.activestate.com/Products/ActivePerl/?_x=1
- How are you opening adiabat_1ph.exe? At the command line with run_adiabat.pl or by double-clicking? Double-clicking isn't recommended as you'll only be able to do the default calculation (isentropic, no trace elements etc.).
It sounds like you are trying to work through one of the manual pages for the graphical-user-interface (GUI) version of MELTS i.e. the original version by Mark Ghiorso that is now hosted at the OFM Research website. Adiabat_1ph has the same underlying algorithm but a text based front-end so some things have to be done in a rather different way, as I think you are discovering. This is especially true of the 'Find Liquidus' function. Working through the example MELTS calculation is a good idea to make sure that everything is working properly so I have posted a tutorial-style topic at:
Adiabat_1ph version of MELTS tutorial: 'Quick start using MELTS'on the 'General Usage' board as it will be relevant to new users on Linux and Mac also. The tutorial-topic explains how, with the Adiabat_1ph software, to reproduce the calculation described at:
http://melts.ofm-research.org/Manual/UnixManHtml/examples-test.htmlwhich was made using the GUI version of MELTS. At some point I'll post similar topics for some of the other examples given in the
MELTS manual.
Before you actually run the program you'll want to set the PATH variable in Windows. Make sure adiabat_1ph.exe and run_adiabat.pl are in the same directory ('D:\phmelts\windows_adiabat_1ph' in my case). Open 'cmd.exe' and navigate to wherever your input files are (e.g. 'Morb.melts' and 'frac_xtal_tutorial.txt'):
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
D:\phmelts>cd users\paula
D:\phmelts\users\paula>set PATH=%PATH%;D:\phmelts\windows_adiabat_1ph
D:\phmelts\users\paula>dir
... etc ...
02/07/2007 12:22 PM <DIR> .
02/07/2007 12:22 PM <DIR> ..
02/07/2007 12:47 PM 710 Morb.melts
02/07/2007 12:49 PM 875 frac_xtal_tutorial.txt
... etc ...
D:\phmelts\users\paula>run_adiabat.pl -f frac_xtal_tutorial.txt
... etc ...
and then continue as described in the tutorial-topic.
Let me know how you get on

Paula