Anyone else seen this. I am sure they said Flex after my 1903 update and 2.5.1 installs but I looked at Device Manager today and found these. I only use virtual comm. 15 for the Woodbox meter and that is working correctly.
FabulaTech is the driver Flex virtual serial ports use. Check SmartSDR CAT and see if you have COM 5, 6, 7, and 15. If you are only seeing COM 15 try right clicking on the remove button in CAT and click reset CAT ports.
Sounds like perhaps you have a different driver loaded.
Right click one of those ports, select "Properties" and look on the Driver tab. You should see which driver you're using. Also click the "Driver Details" button, for even more info. Somebody whose Device Manager shows FlexRadio should do the same so we can compare.