Add Platform Publish Path field not displaying

not sure why, but posting this in case others are getting it

the Add Platform form does not display the Publish Path form field row

its in the source but not displayed

BOA Aegir, have tested on Ubuntu Chrome/Firefox and Windows 7 Chrome/Firefox/IE blah

<div  class=" form-item form-item-labeled" id="edit-title-wrapper"><label  for="edit-title">Name: <span class='form-required' title='This field is required.'>*</span></label><input type="text" maxlength="255" name="title" id="edit-title" size="40" value="" class="form-text required platform-name" /><div class='description'>Choose a unique descriptive name for your platform. You very likely want this to be something like "Drupal 6.20".</div></div><input type="hidden" name="changed" id="edit-changed" value=""  />
<div  class=" form-item form-item-labeled" id="edit-publish-path-wrapper"><label  for="edit-publish-path">Publish path: <span class='form-required' title='This field is required.'>*</span></label><input type="text" maxlength="255" name="publish_path" id="edit-publish-path" size="40" value="" class="form-text required platform-path" /><div class='description'>The absolute path on the filesystem where the sites will be hosted. This needs to be created manually and initialized before your platform works properly. It also needs to be a unique path not already in use by a platform on any server. Your publish path is the absolute path to the directory that gets created. Alternatively, you can specify a makefile below, and the platform will be created automatically if the path specified here does not exist. You are still required to enter the absolute path above, as it will be treated as the target directory by the makefile.</div></div>