This executable depends on the .NET assembly `diCrSysAPINet.dll`.

To package the executable with the dependent assembly, use ILMerge to create the combined file `CryptoSys5A.exe`.

    "%PROGRAMFILES(x86)%\Microsoft\ILMerge\ILMerge" /target:winexe /out:CryptoSys5A.exe CryptoSys5.exe diCrSysAPINet.dll

ILMerge is available for free from the Microsoft Download Center 
<https://www.microsoft.com/en-us/download/details.aspx?id=17630>