When using the new build theme file editor, it seames like that the editor strips off the 'escape' slashes from the text strings.

E.g. extraction from the footer.php

Before
<?php echo gettext("Powered by <a><span id=\"zen-part\">zen</span><span id=\"photo-part\">PHOTO</span></a> <span id=\"IE-clear-part\">with</span> <a><span id=\"zen-part\">zen</span><span id=\"photo-part\">PAGE</span></a>"); ?>

After:
<?php echo gettext("Powered by <span id="zen-part">zen</span><span id="photo-part">PHOTO</span> <span id="IE-clear-part">with</span> <span id="zen-part">zen</span><span id="photo-part">PAGE</span>"); ?>

I'v used the Zenphoto version 1.2.3 [3509] (SVN)

I thing that the issue has been there for a while, meaning that I have seen it before this SVN version.

r: martin

Please open a ticket for this. Thanks.