Hi @Christopher Lee ,
If you run other dtsx files will the issue occur?
Exception Info: System.AccessViolationException
I did some research about the error message and found it may be related to registry.
1) Open up regedit (Win+R and then type regedit)
2) Go to File -> Export and export your settings to have a backup in case this solution fails for you (but otherwise this step is optional)
3) Locate the entry HKEY_CURRENT_USER/Software/Microsoft/VisualStudio
and completely delete both 14.0 and 14.0_Config entries
4) And this should be it, just start Visual studio as normal and it should automatically recreate all of its missing registry entries
Please have a try about the steps above.
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