MSI 2738 and 2739: Could Not Access VBScript or JScript Runtime in Setup
Error 2738 means vbscript.dll is unregistered or blocked, so custom actions die mid-install. Re-register the script engines and clear the per-user CLSID keys.
Error 2738 means vbscript.dll is unregistered or blocked, so custom actions die mid-install. Re-register the script engines and clear the per-user CLSID keys.