ADE GXL always pending...

I can do simulations in ADE L, but if I try to do it in ADE GXL, whatever how simple it is, after I click the run button, the status will always be running and never stop, actually it won't simulate at all, and in adexl results tab, there's a pending under Nominal....

Usually when we do simulation use spectre, a spectre.out window will pop out and you can see the simulation progress, but now even this window not pop up... But if I right click in adexl result window, choose open debug enviroment, I can run the simulation in the debug enviroment just as in ADE L.

Did anyone know how to make it run? Thanks a lot!