From d023ec21f3e72cc72527fa5b44099d7c615c53cb Mon Sep 17 00:00:00 2001
From: Benjamin Dobell <benjamin.dobell+git@glassechidna.com.au>
Date: Thu, 14 Nov 2019 02:48:59 +1100
Subject: [PATCH] Handle execution in unknown scripts (probably in a bad state)

---
 src/MoonSharp.Interpreter/TtsDebugger.cs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/MoonSharp.Interpreter/TtsDebugger.cs b/src/MoonSharp.Interpreter/TtsDebugger.cs
index fd52e2ad..1ec25382 100644
--- a/src/MoonSharp.Interpreter/TtsDebugger.cs
+++ b/src/MoonSharp.Interpreter/TtsDebugger.cs
@@ -215,7 +215,13 @@ public static void OnStringDone(Script script)
 
 		private static string SourceCodeToTempPath(SourceCode sourceCode)
 		{
-			var scriptName = scriptNames[sourceCode.OwnerScript];
+			string scriptName;
+
+			if (!scriptNames.TryGetValue(sourceCode.OwnerScript, out scriptName))
+			{
+				scriptName = "unknown";
+			}
+
 			var sourceName = (scriptName == sourceCode.Name ? scriptName : $"{scriptName}_{sourceCode.Name}").Replace(Path.DirectorySeparatorChar, '_');
 
 			var path = Path.Combine(tempPath, sourceName + ".ttslua");