Safety catches for invalid extra skeleton files.

Author: Lunaretic

xivModdingFramework/Cache/XivDependencyGraph.cs

@@ -1436,6 +1436,10 @@ private static async Task<List<XivDependencyRoot>> GetModdedRoots(string interna
         /// <returns></returns>
         public static XivDependencyRootInfo ExtractRootInfoFilenameOnly(string filenameWithoutExtension)
         {
+            if(String.IsNullOrEmpty(filenameWithoutExtension))
+            {
+                return new XivDependencyRootInfo();
+            }
             var regex = new Regex("([a-z])([0-9]{4})([a-z])([0-9]{4})");
             var match = regex.Match(filenameWithoutExtension);
             if(!match.Success)

xivModdingFramework/Models/FileTypes/Sklb.cs

@@ -105,6 +105,7 @@ public static async Task<string> GetExtraSkeletonFile(string fullMdlPath)
             var race = XivRaces.GetXivRace(fullMdlPath.Substring(1, 4));
 
             return await GetExtraSkeletonFile(root.Info, race);
+            
         }
 
 
@@ -137,7 +138,18 @@ public static async Task<string> GetExtraSkeletonFile(XivDependencyRootInfo root
             {
                 return parsedFile;
             }
-            await ExtractAndParseSkel(file);
+
+            try
+            {
+                // In some cases, the extra skeleton doesn't actually exist, despite the 
+                // game files saying it should.  In these cases, SE actually intends to 
+                // default to the base skel.
+                await ExtractAndParseSkel(file);
+            }
+            catch
+            {
+                return null;
+            }
             return parsedFile;
         }