This is an issue that exists with various versions of Sound Forge. I am facing it now on the latest Sound Forge version 15. The issue is that Sound Forge hard wires all current ASIO devices that exist during the time of install into the registry under:
HKEY_CURRENT_USER\Software\MAGIX\SOUND FORGE Pro\<Sound Forge Version>\Metrics\Audio Hardware\Classes\ASIO Driver Class\<ASIO Device Reference>
Upon launch of Sound Forge if the device then does not exist, a reinstall of that driver is initiated. In most cases the reinstall cannot complete, because the install location is temporary referring to files that no longer exist. This should not be happening anyway, because a user may have removed the device and intentionally uninstalled its drivers. Why the software was designed to behave this way is a mystery. Does this go through QA testing?
Anyway, I removed a DAC and uninstalled all drives for it. It no longer exists in my system. Starting Sound Forge 15 is attempting to force a reinstall of the drivers I intentionally uninstalled. This is poor software design and needs to be properly thought out. I am working-around this poor design decision by manually deleting all invalid ASIO driver references that exists in the location I specified above. I will reboot after doing this to see if the issue as a result of the poor design is now resolved.
Others will also face this. I will let you know if my work-around is successful.