Windows 7 Dreamup Error:cant find any com port-aborting

[boltakal]

Hi
Im trying to flash my Dreambox 800 HD Pvr. When im runing Dreamup program get msg . Error:cant find any com port-aborting unable to open

DreamUP V1.3.3.4

Downloads | dream-multimedia-tv.de

Please Guide me how can i get out this problem..

Thanks
Boltakal