Assuming you mean MH-X60th LED Spot and Auto Update is enabled in the show section of the Capture Visualiser Settings window then it might be that your library is not up-to-date and/or that you are not using the latest version of the personality.
If you have not done so already please download and install the latest Titan Fixture Library. Links and instructions can be found on the downloads page of the
personality website. For Titan v11.4 you need
Titan Fixture Library v10.0-v11.4.
If you patch in a new show the fixture should then automatically appear in the Capture Visualiser window.
If you are using a show with the fixture(s) already patched you can check the version by pressing OPEN/VIEW (labelled differently depending on platform) followed by one of the appropriate fixture handles. This will open the Fixture View window. In the Fixture View window click on the 'Personality' tab to reveal the file history. The last entry should be dated 06-12-16. If it is 10-12-15 you will need to update via PATCH -> [Edit Fixtures] -> [Update Personality] -> where there should be a [MH-X60th LED Spot] option. Select this to update. (if this option is not available either you are using the 06-12-16 version or you have not installed the latest library correctly).
If you are using a show with the fixture(s) already patched and it does not appear with the latest library and latest version you could try patching one more of the same fixture with the Capture Visualiser window open. That should force it to populate. You can then delete the extra fixture.