CalcGen 2009 may require older versions of the .NET Framework or specific DLLs (like msvbvm60.dll ). You may need to enable ".NET Framework 3.5" in your Windows Features settings. Why Users Still Seek the 2009 Version
Seek out community forums or trusted automotive repositories to find the "383" version or latest zip files. ⚠️ A Word on Safety download calcgen by i s a 2009 383 best