Add-on MaskedTextField

Good afternoon,
I’m having trouble making a mask to a TextField, the add-on does not compile when run from an error in the application

the error is this:

Does not contain Widgetset Implementation for com.vaadin.ui.MaskedTextField. Check @ ITS ClientWidget mapping, widgetsets GWT module description file and re-compile your widgetset. In case you have downloaded the add-on package vaadin, You Might want to refer to add-on instructions. Unrendered UIDL:

  • Unrendered UIDL

I use Eclipse, vaadin version 6.7.1.

thank you

Have you re-compiled the widgetset? See the Compile Vaadin widgets button in the Eclipse toolbar, the gear with the Vaadin logo on it.

Thank you for your attention.

when I press on the the re-compliador of a message like this:

widgetset select file (widgetset.gwt.xml …) or a project to compile vaadin.

command and when re-compile the MaskedTextFielwidgetset.gwt.xml of an error:

Error Compiling widgetset:
java.lang.NullPointerException - null

See error log for details

Someone could help me?