diff --git a/BodyshopUploader/Utils/HTTPServer.cs b/BodyshopUploader/Utils/HTTPServer.cs
index e01ea71..6fa76c8 100644
--- a/BodyshopUploader/Utils/HTTPServer.cs
+++ b/BodyshopUploader/Utils/HTTPServer.cs
@@ -45,50 +45,60 @@ namespace BodyshopPartner.Utils
 
             List<QbRequestItem> AllRequests = ParseRequest(req);
             List<QbResponseItem> HttpResponse = new List<QbResponseItem>();
-
-            hlog("Connecting to QuickBooks. This may take a moment...");
-            QuickBooksInterop.ConnectToQuickBooks();
-            
-            foreach (QbRequestItem request in AllRequests)
+            try
             {
-                try
+                hlog("Connecting to QuickBooks. This may take a moment...");
+                QuickBooksInterop.ConnectToQuickBooks();
+
+                foreach (QbRequestItem request in AllRequests)
                 {
-                    hlog("Processing QuickBooks request. ImEX Online Record ID:" + request.Id);
-                    XDocument response = XDocument.Parse(QuickBooksInterop.ProcessQBXmlRequestUnManaged(request.QbXML));
-                    QbXmlResponse ResponseStatus = QuickBooksInterop.ParseResponseXml(response);
-
-                    logger.Trace(response.ToString());
-                    logger.Debug(ResponseStatus.ToString());
-                    hlog(ResponseStatus.ToString());
-
-                    QbResponseItem r = new QbResponseItem()
+                    try
                     {
-                        Id = request.Id,
-                        Success = ResponseStatus.StatusCode == "0" || request.OkStatusCodes.Contains(ResponseStatus.StatusCode),
-                        ErrorMessage = ResponseStatus.StatusMessage
-                    };
+                        hlog("Processing QuickBooks request. ImEX Online Record ID:" + request.Id);
+                        XDocument response = XDocument.Parse(QuickBooksInterop.ProcessQBXmlRequestUnManaged(request.QbXML));
+                        QbXmlResponse ResponseStatus = QuickBooksInterop.ParseResponseXml(response);
 
-                    HttpResponse.Add(r);
-                }
-                catch (Exception Ex)
-                {
-                    //Shouldn't really get here unless something is malformed. 
-                    logger.Error(Ex, "Error encountered when processing QbXML Request.\n {0}", request.QbXML);
-                    QbResponseItem r = new QbResponseItem()
+                        logger.Trace(response.ToString());
+                        logger.Debug(ResponseStatus.ToString());
+                        hlog(ResponseStatus.ToString());
+
+                        QbResponseItem r = new QbResponseItem()
+                        {
+                            Id = request.Id,
+                            Success = ResponseStatus.StatusCode == "0" || request.OkStatusCodes.Contains(ResponseStatus.StatusCode),
+                            ErrorMessage = ResponseStatus.StatusMessage
+                        };
+
+                        HttpResponse.Add(r);
+                    }
+                    catch (Exception Ex)
                     {
-                        Id = request.Id,
-                        Success = false,
-                        ErrorMessage = Ex.Message
-                    };
+                        //Shouldn't really get here unless something is malformed. 
+                        logger.Error(Ex, "Error encountered when processing QbXML Request.\n {0}", request.QbXML);
+                        QbResponseItem r = new QbResponseItem()
+                        {
+                            Id = request.Id,
+                            Success = false,
+                            ErrorMessage = Ex.Message
+                        };
+
+                        HttpResponse.Add(r);
+                    }
 
-                    HttpResponse.Add(r);
                 }
+                QuickBooksInterop.DisconnectFromQuickBooks();
+
+                hlog("Completed QuickBooks requests.");
 
             }
-            QuickBooksInterop.DisconnectFromQuickBooks();
-
-            hlog("Completed QuickBooks requests.");
+            catch (Exception Ex)
+            {
+                logger.Error(Ex, "Error encountered while processing QuickBooks requests.");
+                hlog("Error encountered while processing QuickBooks requests.");
+                HttpResponse.Add(new QbResponseItem() { Id = "-1", Success = false, ErrorMessage = Ex.Message });
+            }
             res.WithCORS().AsText(JsonConvert.SerializeObject(HttpResponse));
+
         }
 
         public static List<QbRequestItem> ParseRequest(System.Net.HttpListenerRequest req)
diff --git a/BodyshopUploader/Utils/QuickBooksInterop.cs b/BodyshopUploader/Utils/QuickBooksInterop.cs
index d1ebdf6..66f702f 100644
--- a/BodyshopUploader/Utils/QuickBooksInterop.cs
+++ b/BodyshopUploader/Utils/QuickBooksInterop.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -25,6 +26,10 @@ namespace BodyshopPartner.Utils
 
         public static void ConnectToQuickBooks()
         {
+            if(String.IsNullOrWhiteSpace(Properties.Settings.Default.QuickBooksFilePath) || !File.Exists(Properties.Settings.Default.QuickBooksFilePath))
+            {
+                throw new Exception("The QuickBooks file specified does not exist.");
+            }
             try
             {
                 logger.Debug("Attempting to connect to QuickBooks...");
@@ -58,6 +63,11 @@ namespace BodyshopPartner.Utils
             catch (Exception ex)
             {
                 logger.Error(ex);
+                if(ex.Message.Contains("80040154 Class not registered"))
+                {
+                    logger.Error("QuickBooks Request Processor not registered. Is QuickBooks installed on this computer?");
+                    throw new Exception("QuickBooks Request Processor not registered. Is QuickBooks installed on this computer?");
+                }
             }
 
         }