diff --git a/simgear/props/props.cxx b/simgear/props/props.cxx
index acbcc92d..3d63758e 100644
--- a/simgear/props/props.cxx
+++ b/simgear/props/props.cxx
@@ -94,7 +94,7 @@ public:
 
 template<typename Range>
 inline Range
-parse_name (const Range &path)
+parse_name (const SGPropertyNode *node, const Range &path)
 {
   typename Range::iterator i = path.begin();
   typename Range::iterator max = path.end();
@@ -118,15 +118,24 @@ parse_name (const Range &path)
       } else if (*i == '[' || *i == '/') {
 	break;
       } else {
-	throw string("name may contain only ._- and alphanumeric characters");
+        string err = "'";
+        err.push_back(*i);
+        err.append("' found in propertyname after '"+node->getNameString()+"'");
+        err.append("\nname may contain only ._- and alphanumeric characters");
+	throw err;
       }
       i++;
     }
   }
 
   else {
-    if (path.begin() == i)
-      throw string("name must begin with alpha or '_'");
+    if (path.begin() == i) {
+      string err = "'";
+      err.push_back(*i);
+      err.append("' found in propertyname after '"+node->getNameString()+"'");
+      err.append("\nname must begin with alpha or '_'");
+      throw err;
+    }
   }
   return Range(path.begin(), i);
 }
@@ -268,7 +277,7 @@ find_node_aux(SGPropertyNode * current, SplitItr& itr, bool create,
   // Empty name at this point is empty, not root.
   if (token.empty())
     return find_node_aux(current, ++itr, create, last_index);
-  Range name = parse_name(token);
+  Range name = parse_name(current, token);
   if (equals(name, "."))
     return find_node_aux(current, ++itr, create, last_index);
   if (equals(name, "..")) {
diff --git a/simgear/sound/sample_group.cxx b/simgear/sound/sample_group.cxx
index 1da29059..e2a2b2c7 100644
--- a/simgear/sound/sample_group.cxx
+++ b/simgear/sound/sample_group.cxx
@@ -275,7 +275,7 @@ SGSampleGroup::stop ()
 void
 SGSampleGroup::suspend ()
 {
-    if (_pause == false) {
+    if (_active && _pause == false) {
         _pause = true;
         sample_map_iterator sample_current = _samples.begin();
         sample_map_iterator sample_end = _samples.end();
@@ -294,7 +294,7 @@ SGSampleGroup::suspend ()
 void
 SGSampleGroup::resume ()
 {
-    if (_pause == true) {
+    if (_active && _pause == true) {
         sample_map_iterator sample_current = _samples.begin();
         sample_map_iterator sample_end = _samples.end();
         for ( ; sample_current != sample_end; ++sample_current ) {
diff --git a/simgear/sound/soundmgr_openal.cxx b/simgear/sound/soundmgr_openal.cxx
index 16c17315..e372f3cc 100644
--- a/simgear/sound/soundmgr_openal.cxx
+++ b/simgear/sound/soundmgr_openal.cxx
@@ -164,8 +164,9 @@ void SGSoundMgr::init(const char *devname) {
 
     _vendor = (const char *)alGetString(AL_VENDOR);
     _renderer = (const char *)alGetString(AL_RENDERER);
-    if ( (_vendor != "OpenAL Community" && _vendor != "Apple Computer Inc.") ||
-        (_renderer != "Software" && _renderer != "OpenAL Sample Implementation")
+    if ( (_vendor != "Adalin" && _vendor != "Apple Computer Inc.") &&
+          (_vendor != "OpenAL Community" || (_renderer != "Software" &&
+                        _renderer != "OpenAL Sample Implementation"))
        )
     {
        _bad_doppler = true;