Ignore compile errors at startup, so user is able to fix them

Author: pajswigger

burpscript.py

@@ -33,7 +33,10 @@ def registerExtenderCallbacks(self, callbacks):
                     SimpleAttributeSet())
 
             self._script = script
-            self._code = compile(script, '<string>', 'exec')
+            try:
+                self._code = compile(script, '<string>', 'exec')
+            except Exception as e:
+                traceback.print_exc(file=self.callbacks.getStderr())
 
         callbacks.registerExtensionStateListener(self)
         callbacks.registerHttpListener(self)
@@ -81,4 +84,4 @@ def script(self):
 
         self._script = _script
         self._code = compile(_script, '<string>', 'exec')
-        return self._code
+        return self._code