Error when accessing wingui

hello,

i've configured an iview to connect to r/3 using wingui

as administrator, it works when i preview the iview

but as guest user, i get an error

in log file i can find this :

<i>

Content pass of Application Integrator failed.

Component Name: com.sap.portal.appintegrator.sap.Transaction,

Context Name (iView): pcd:portal_content/fr.nancyuniversite.NancyU/fr.nancyuniversite.roles/fr.nancyuniversite.TESTGUI/fr.nancyuniversite.worksettest/fr.nancyuniversite.pagetest/fr.nancyuniversite.T01GUI310,

Top Layer: Transaction/DragAndRelateLayer,

Producer ID (FPN): null,

System Alias: T01CLNT310</i>

i'm a beginner with portal and can't figure out what is this problem

thanks in advance!