Hokay! Try two - is the data formatted correctly for what you are expecting? Thank you for the catches, I think I figured out the formatting and now ever field is prompted (but it's up to the human to not enter any data).
edit: and it seems to have eaten my spacing on the forum post. I can try uploading a file if that would help.
<?xml version="1.0" ?>
<root version="3.3" release="1|3.5E:17|CoreRPG:4">
<reference static="true">
<diseases>
<id-00220>
<description type="formattedtext">
<p>
<b>Source </b>
<i>Pathfinder Campaign Setting: Lost Kingdoms pg. 19</i>
</p>
</description>
<disease_effect type="formattedtext">
<p>1d2 Str damage and 1d2 Wis damage</p>
<p>A creature afflicted by ubashki fever develops unsightly splotches and sores all over its body that persist until the disease is cured.</p>
</disease_effect>
<freq_interval type="number">1</freq_interval>
<freq_unit type="string">1440</freq_unit>
<isconsecutive type="number">1</isconsecutive>
<locked type="number">0</locked>
<name type="string">Ubashki Fever</name>
<onset_dice type="dice">d3</onset_dice>
<onset_unit type="string">1440</onset_unit>
<save_string type="string">DC 13 Fort 1/day after 1d3 days</save_string>
<savecount_consec type="number">0</savecount_consec>
<savedc type="number">13</savedc>
<savesreq type="number">2</savesreq>
<savetype type="string">fortitude</savetype>
<subtype type="string">injury</subtype>
<type type="string">disease</type>
</id-00220>
<id-00221>
<type type="string">disease</type>
<npc type="string">Akata</npc>
<name type="string">Void Death</name>
<subtype type="string">injury</subtype>
<savetype type="string">fortitude</savetype>
<savedc type="number">12</savedc>
<onset_interval type="number">1</onset_interval>
<onset_unit type="string">60</onset_unit>
<freq_interval type="number">1</freq_interval>
<freq_unit type="string">1</freq_unit>
<disease_effect type="formattedtext">effect 1d2 Dex and 1d2 Con damage; an infected creature who dies rises as a void zombie 2d4 hours later (see below)</disease_effect>
<isconsecutive type="number">1</isconsecutive>
<savesreq type="number">2</savesreq>
</id-00221>
<id-00222>
<type type="string">poison</type>
<npc type="string">Amphisbaena</npc>
<name type="string">Poison</name>
<subtype type="string">injury</subtype>
<savetype type="string">fortitude</savetype>
<savedc type="number">14</savedc>
<freq_interval type="number">1</freq_interval>
<freq_unit type="string">1</freq_unit>
<duration_interval type="number">6</duration_interval>
<duration_unit type="string">.1</duration_unit>
<poison_effect_primary type="string">1d3 Con</poison_effect_primary>
<poison_effect_secondary type="string">1d3 Con</poison_effect_secondary>
<isconsecutive type="number">0</isconsecutive>
<type type="number">1</type>
</id-00222>
<id-00223>
<type type="string">poison</type>
<npc type="string">Arenea</npc>
<name type="string">Poison</name>
<subtype type="string">injury</subtype>
<savetype type="string">fortitude</savetype>
<savedc type="number">14</savedc>
<freq_interval type="number">1</freq_interval>
<freq_unit type="string">1</freq_unit>
<duration_interval type="number">6</duration_interval>
<duration_unit type="string">.1</duration_unit>
<poison_effect_primary type="string">1d3 Strength</poison_effect_primary>
<poison_effect_secondary type="string">1d3 Strength</poison_effect_secondary>
<isconsecutive type="number">0</isconsecutive>
<type type="number">1</type>
</id-00223>
</diseases>
</reference>
</root>

