ClearScript ExtendedHostFunctions kills EXE when run from Task Scheduler?

Question

In my C# project I have the following

    private static JScriptEngine JSE = new JScriptEngine(WindowsScriptEngineFlags.EnableDebugging | WindowsScriptEngineFlags.EnableJITDebugging);

...
        JSE.AddHostObject("CSHost", new HostFunctions());
        JSE.AddHostObject("CSExtendedHost", new ExtendedHostFunctions());
        JSE.AddHostObject("CS", new HostTypeCollection("mscorlib",
                                              "System",
                                              "System.Core",
                                              "System.Data",
                                              "RestSharp",
                                              "QuarterMaster",
                                              "AutoPlayLibrary",
                                              "ExtrasLibrary",
                                              "GoogleAdWordsLibrary",
                                              "GoogleDriveLibrary",
                                              "JSONSerialisationLibrary",
                                              "SeleniumLibrary",
                                              "WebServerLibrary",
                                              "WordPressLibrary",
                                              "WorkFlowMaxLibrary",
                                              "XeroLibrary"));

This works fine when run interactively. What happens when run from Task Scheduler is that the CSHost defines okay but the CSExtendedHost kills the EXE and throws errors in the Event log.

The errors in Event Viewer aren't exactly helpful, viz

Application: RulesetRunner.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.IO.FileLoadException
   at System.Reflection.RuntimeAssembly._nLoad(System.Reflection.AssemblyName, System.String, System.Security.Policy.Evidence, System.Reflection.RuntimeAssembly, System.Threading.StackCrawlMark ByRef, IntPtr, Boolean, Boolean, Boolean)
   at System.Reflection.RuntimeAssembly.nLoad(System.Reflection.AssemblyName, System.String, System.Security.Policy.Evidence, System.Reflection.RuntimeAssembly, System.Threading.StackCrawlMark ByRef, IntPtr, Boolean, Boolean, Boolean)
   at System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(System.Reflection.AssemblyName, System.Security.Policy.Evidence, System.Reflection.RuntimeAssembly, System.Threading.StackCrawlMark ByRef, IntPtr, Boolean, Boolean, Boolean)
   at System.Reflection.RuntimeAssembly.InternalLoad(System.String, System.Security.Policy.Evidence, System.Threading.StackCrawlMark ByRef, IntPtr, Boolean)
   at System.Reflection.RuntimeAssembly.InternalLoad(System.String, System.Security.Policy.Evidence, System.Threading.StackCrawlMark ByRef, Boolean)
   at System.Reflection.Assembly.Load(System.String)
   at Microsoft.ClearScript.HostTypeCollection.AddAssembly(System.String)
   at System.Array.ForEach[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]](System.__Canon[], System.Action`1<System.__Canon>)
   at Microsoft.ClearScript.HostTypeCollection..ctor(System.String[])
   at RulesetRunner.Program.Main(System.String[])

It's only been through trial and error that I've established that its ExtendedHostFunctions. If I comment it out and retry something else triggers the problem, in this case RestSharp but the DLL is in the right place and even on the PATH.

It looks like `HostTypeCollection` is failing to load one or more of those assemblies. See if you can figure out which ones. — BitCortex, Aug 22 '19 at 03:35
Well, RestSharp was one of them. As it stands, I've completely reworked the HostTypeCollection section. But it's annoying that I had to. One Azure server works, the other not. Both same Server OS. — bugmagnet, Aug 22 '19 at 05:27

ClearScript ExtendedHostFunctions kills EXE when run from Task Scheduler?

0 Answers0