SSIS报错：脚本二进制代码未找到，已设DelayValidation=true仍无法解决

Hey there, let's work through this frustrating SSIS issue together—copying working code to a new package shouldn't break things, so let's dig into the common fixes:

• Re-build the script project explicitly
  Even if your code matches exactly, the new script task might not have compiled properly behind the scenes. Open the script editor by clicking Edit Script, then go to the Build menu (or hit Ctrl+Shift+B) to compile the project. Make sure there are no compilation errors in the Output window, then save and close the editor. This forces SSIS to generate the correct binary files it needs to execute the task.

• Verify .NET Framework version matches the original package
  SSIS script tasks are tied to specific .NET versions, and a mismatch here can prevent binary code from loading. Right-click the script task → Edit Script, then right-click the script project in Solution Explorer → Properties. Check the Target framework under the Application tab and ensure it's identical to what the original working package used. For example, if your original package used .NET Framework 4.7.2, don't let the new default (like 4.8) sneak in.

• Clear SSIS script temporary files
  SSIS caches compiled script files in a temp directory, and corrupted cache files can cause this error. Close Visual Studio/SSDT first, then navigate to C:\Users\<YourUsername>\AppData\Local\Temp\Vsta and delete all folders related to your SSIS project. Reopen the package, edit the script, and rebuild it—this will generate fresh, uncorrupted binaries.

• Check for missing assembly references
  Your original script might have relied on external assemblies that didn't get copied over when you moved the code. In the script editor, expand the References node in Solution Explorer and compare it to the reference list from the original working script task. If any references are missing (like custom DLLs or specific system assemblies), add them back manually.

• Try creating a brand-new script task
  Sometimes copying the entire script task can carry over hidden corrupted metadata. Instead, create a new script task in your package, open the editor, and paste your code into the new script file. Rebuild the project, then test execution—this avoids any leftover issues from the copied task's configuration.

• Double-check project-level runtime settings
  Ensure your new SSIS project's runtime settings match the original. Right-click the project → Properties → Configuration Properties → Debugging. Confirm the Run64BitRuntime setting is the same as the working package (some scripts behave differently in 32 vs 64-bit mode).

内容的提问来源于stack exchange，提问作者Troy R