>I create modeless form with command:
>DO FORM myform NAME v_mydesktop LINKED
>This form is shown maximized in FoxPro app. When I select one menu item where run this procedure:
>RELEASE v_myform
>DO FORM myotherform NAME v_mydesktop LINKED
>My previous form (myform) is not release and new crash because previous for is not release.
>How can I solve this problem ?

Link your forms to app object property and then use this reference to release forms reliably:
DO FORM myform NAME oApp.myform LINKED
and later on
oApp.myform.release()