Created Unassigned: open.Raster from memory yields overflow error [2360]

For some reason, in my production (but not my dev) environment, when I try to do this:

private Ghostscript.NET.GhostscriptVersionInfo _version = Ghostscript.NET.GhostscriptVersionInfo.GetLastInstalledVersion(Ghostscript.NET.GhostscriptLicense.GPL | Ghostscript.NET.GhostscriptLicense.AFPL, Ghostscript.NET.GhostscriptLicense.GPL);

raster.Open(fileStream, _version, true);

I get this:

System.OverflowException: Arithmetic operation resulted in an overflow.
at Microsoft.WinAny.Interop.DynamicNativeLibrary.FinalizeSections(MEMORY_MODULE* memory_module)
at Microsoft.WinAny.Interop.DynamicNativeLibrary.MemoryLoadLibrary(Byte[] data)
at Microsoft.WinAny.Interop.DynamicNativeLibrary..ctor(Byte[] buffer)
at Ghostscript.NET.GhostscriptLibrary..ctor(GhostscriptVersionInfo version, Boolean fromMemory)
at Ghostscript.NET.Interpreter.GhostscriptInterpreter..ctor(GhostscriptVersionInfo version, Boolean fromMemory)
at Ghostscript.NET.Viewer.GhostscriptViewer.Open(String path, GhostscriptVersionInfo versionInfo, Boolean dllFromMemory)
at Ghostscript.NET.Viewer.GhostscriptViewer.Open(Stream stream, GhostscriptVersionInfo versionInfo, Boolean dllFromMemory)
at Ghostscript.NET.Rasterizer.GhostscriptRasterizer.Open(Stream stream, GhostscriptVersionInfo versionInfo, Boolean dllFromMemory)
at PersonnelDocuments.Controllers.SearchController.Splitter(Stream fileStream, IEnumerable`1 adminKeys)
at PersonnelDocuments.Controllers.SearchController.<CreateEmployeeDocumentBatch>d__14.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Web.Mvc.Async.TaskAsyncActionDescriptor.EndExecute(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass37.<BeginInvokeAsynchronousActionMethod>b__36(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3d()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass33.<BeginInvokeActionMethodWithFilters>b__32(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<>c__DisplayClass2b.<BeginInvokeAction>b__1c()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult)