Log4OM

I am trying to connect my IC 7800 to Log4OM. However, when I go to connect > CAT > Show CAT interface the box won't appear on the screen that allows me to put in the COM port. Any idea what's going on? Oh, I have gone into the CAT interface and made sure Omnrig is selected and the relevant boxes are checked. However, I just can't get the box to show when I click on the show CAT interface.

Everything seems to be working now. It seems that I need to use hamlib rather than omirig. I suspect it may have something to do with the fact I was using a virtual serial port software with an SDR radio. I don't know. Anyway, everything is working just fine now.