EricL
Just take a look at the most recent forum updates here as this may be your issue. I had EyeTV running fine on Sequioa and then an update broke it. My issue was to do with gatekeeper/expired certs (as the app is no longer being developed). All down to mac OS becoming more like iOS
It can be easily fixed by using Sentinel to self-sign the cert (Google 'sentinel macupdate'), but I wasn't sure what Sentinel did and didn't want to install something else into the mix and so got it sorted by running commands in terminal instead.
First you need to remove the quarantine attribute from the downloaded dmg using xattr. The command should be:
xattr -r -d com.apple.quarantine /path/to/your_file.dmg
Install the dmg
Next bit is for removing old cert from the app and installing a self-signed cert:
The below is taken from another forum for OpenSCAD program that was also broke from mac updates. You just need to change the app name to the EyeTV name showing when you use finder to view the application in the applications folder...not at home so can't quote the app name directly {possibly EyeTV.app}
The below "removes the signature of the app and then self-signs it then solved the problem for OpenSCAD 2021.01"
codesign --remove-signature /Applications/OpenSCAD.app
codesign --force --deep --sign - /Applications/OpenSCAD.app
I have a second machine (also on Sequoia) and it never had had EyeTV running on it previously. I installed as above and it runs perfectly
I know that my issue was with Sequoina, but I have seen the other guys on here have eyeTV running fine in Tahoe