SigCaptX service not detected

The most likely explanation for this error message is that the SigCaptX service cannot connect to its default port of 8000.
This could be because it is blocked by anti-virus or because another application is already using that port.
Please check https://developer-docs.wacom.com/faqs/docs/q-sig/sig-sigcaptx#handling-port-conflicts to see if it is a port conflict.
If not then you will probably need to change your anti-virus settings to allow the SigCaptX service to access port 8000. You will also need to allow the SigCaptX server process to access port 8001. If SigCaptX needs to handle a number of concurrent users then you will also need to enable port 8002 and beyond as required.