I just checked the email generated by that script! Did you modify the script?
There are errors with line breaks not where they should be, i.e.:
----1b179beed3d1fc0bd15e1a399cd8c93a
Content-Type: text/plain;
charset=us-ascii
.. should be ..
----1b179beed3d1fc0bd15e1a399cd8c93a
Content-Type: text/plain; charset=us-ascii
And this is definately not in the vlibMimeMail script.
I've emailed you with the vlibMimeMail script which should work.