There should be a blank in front of the "id" attribute for the submit-button (line 3 in the following listing).

1-<button type="submit" dojoType="webwork:BindButton"<#rt/>
2-<#if parameters.id?exists>
3-id="${parameters.id}"<#rt/>
4-</#if>
5-<#if parameters.form?exists && parameters.form.id?exists>
6- formId="${parameters.form.id}"<#rt/>
7-</#if>
....

the html result will be something like this:

<button type="submit" dojoType="webwork:BindButton"id="..." formId="...">

in which the dojoType and the id attributes are stuck together, without a space in between.