I have try to translate my test CMS Silverstripe. I use a simple
<% sprintf(_t('SHOWINPAGE','Show page in %s'),$Locale.Nice) %>
in my template. Atthis point i want to use the i18nTextCollector script as in the book at the page 300
but i get a strange error
Build task 'i18nTextCollector' not found. It isn't a subclass of BuildTask.
How i solve this? Thank you