IC-7300 Swisslog/JTDX - Omnirig help

[G4NAQ]

Hi, I am a new user to Swisslog.  I have installed & setup OmniRig as I have started to experiment with FT8 and wanted to enable automatic logging...  

Firstly all programs independently are working with the IC-7300 using the USB / CAT control (not the CI-V interface).  I installed OmniRig which is working fine with Swisslog but whenever I start any other program and set the respective interface to OmniRig I get the error "Failed to start OmniRig COM server".. 

- Dell Optiplex 3050
- Win 10 Pro 64 bit with all updates applied
- Swisslog v5.99f
- OmniRig - v2.1.0.0
- JTDX - v2.1.0 RC148
- WSJT latest

I have added firewall rules for each of the above programs as in various forums I have seen this mentioned.
None of the programs are currently running as Administrator though I have tried this & with them all running as Administrator with no change...

Any clues appreciated..

Thanks
Clive