: Some users resolve persistent issues by deleting "UpperFilters" from the registry path HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\36fc9e60-c465-11cf-8056-444553540000 .
The error is related to (formerly HASP). Mastercam uses these drivers to communicate with a USB hardware key (the “HASP” or “dongle”) or emulate a virtual USB bus for licensing.
: Some users resolve persistent issues by deleting "UpperFilters" from the registry path HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\36fc9e60-c465-11cf-8056-444553540000 .
The error is related to (formerly HASP). Mastercam uses these drivers to communicate with a USB hardware key (the “HASP” or “dongle”) or emulate a virtual USB bus for licensing. mastercam x72022 virtual usb bus error link