This is most likely due to 3rd party Antivirus software that quarantined or removed some of Cubicost TAS, TRB & TBQ program files.
A reinstallation of Cubicost software is required. 3rd party Antivirus software should be disabled temporary before installation and configured to whitelist Cubicost software after installation.
Microsoft has rebuilt Windows Defender/Windows Security to be one of the most advanced Antivirus software on the market. We recommend Windows 10 built-in Windows Defender/Windows Security for better compatibility, security & performance.