From 6185b85f7b3bf0421023f9cf17637252fb7a998e Mon Sep 17 00:00:00 2001
From: Andy McFadden <fadden@fadden.com>
Date: Fri, 19 Apr 2019 14:37:46 -0700
Subject: [PATCH] Fix crash on asm gen when no settings file exists

---
 README.md                           | 6 +++---
 SourceGen/AsmGen/AssemblerConfig.cs | 7 +++++--
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index 9a5b5af..cbb8ea3 100644
--- a/README.md
+++ b/README.md
@@ -30,9 +30,9 @@ as well as many less-common ones.
   processor status flags are tracked, allowing identification of branches
   that are always/never taken, accurate cycle count listings, and correct
   analysis of 65816 code with variable-width registers.
-- Easy generation of assembly source code in popular formats (currently
-  cc65 and Merlin 32). Cross-assemblers can be invoked from the GUI to
-  verify correctness.
+- Easy generation of assembly source code for popular cross-assemblers
+  (currently cc65, 64tass, and Merlin 32). Cross-assemblers can be invoked
+  from the GUI to verify correctness.
 - Symbols and constants are provided for ROM and operating system entry
   points on several popular systems.
 - Project files are designed for sharing and collaboration.</li>
diff --git a/SourceGen/AsmGen/AssemblerConfig.cs b/SourceGen/AsmGen/AssemblerConfig.cs
index 8c38725..443397a 100644
--- a/SourceGen/AsmGen/AssemblerConfig.cs
+++ b/SourceGen/AsmGen/AssemblerConfig.cs
@@ -68,14 +68,17 @@ namespace SourceGen.AsmGen {
 
         /// <summary>
         /// Creates a populated AssemblerConfig from the app settings for the specified ID.
+        /// If the assembler hasn't been configured yet, the default configuration object
+        /// will be returned.
         /// </summary>
         /// <param name="settings">Settings object to pull the values from.</param>
         /// <param name="id">Assembler ID.</param>
-        /// <returns>The AssemblerConfig, or null if not configured.</returns>
+        /// <returns>The AssemblerConfig.</returns>
         public static AssemblerConfig GetConfig(AppSettings settings, AssemblerInfo.Id id) {
             string cereal = settings.GetString(GetSettingName(id), null);
             if (string.IsNullOrEmpty(cereal)) {
-                return null;
+                IAssembler asm = AssemblerInfo.GetAssembler(id);
+                return asm.GetDefaultConfig();
             }
 
             JavaScriptSerializer ser = new JavaScriptSerializer();