Matrox dual head fullscreen without preview monitor

[Bodo]

Hello,

iam running a mac mini -> dual head -> two full hd projector in an installation - all is running automatically by switch on the housepower (mac on, izzy-file automatic start item - automatically show stage) but if i remove the preview monitor - where i see my izzy patch  - the patch will be shown allways in front of the projected image on one of the full hd projector (after automatically show stages) is there a hook which iam missing?

i`am running 10.8.5 / izzy 2.0.0b4

thanks for your help!