It's ok, the error is resolved!
In liferay-portlet.xml: del <instanceable>true</instanceable>, add <ajaxable>false</ajaxable> in <portlet>.
But I have still the problem de reload!
It's mean: I can't see my portlet until reload the page...
( NetBeans6.5.1 + PortalPack3.0 + Liferay5.22 + Tomcat6.018 )
Sorry for my english, thank you for your answer.
:)