Something 0x90 wrote about it:
'Your problem is something related to your computer only. It means the DLL injection has failed and/or the named pipe has not/could not be created.
This could be a problem of any security tool blocking it. Or the game has freezed and you tried to activated the trainer. Or the game is started as admin and hte trainer isn't. Or..or..or.
Also check if both required VC++ redistributables are installed which you find in the readme.'
Please check if your PC meets the trainer's requirements regarding the .NET version and the VC++ 2015 libraries. Youe find information about this in the readme txt file provided with the trainer in Troubleshooting near the end of the text.