This is not a complete COBOL Server installation. I would believe that whoever installed this simply packaged the bin64 folder along with your application. If COBOL Server is actually installed it should appear under the list of installed programs in Windows -->Control Panel-->Programs and Features
When you execute the RUN.EXE command by itself, what is the banner that is displayed? It appears to me that perhaps the RUN.EXE is from an earlier product release such as Net Express as Visual COBOL no longer uses .gnt files as system files.
Are all the applications that you are running compiled as 64-bit?