diff --git a/src/game/Unit.cpp b/src/game/Unit.cpp
index 08e46b046..772308465 100644
--- a/src/game/Unit.cpp
+++ b/src/game/Unit.cpp
@@ -1066,7 +1066,10 @@ void Unit::CastSpell(Unit* Victim, uint32 spellId, bool triggered, Item *castIte
 
     if(!spellInfo)
     {
-        sLog.outError("CastSpell: unknown spell id %i by caster: %s", spellId, GetObjectGuid().GetString().c_str());
+        if (triggeredByAura)
+            sLog.outError("CastSpell: unknown spell id %i by caster: %s triggered by aura %u (eff %u)", spellId, GetObjectGuid().GetString().c_str(), triggeredByAura->GetId(), triggeredByAura->GetEffIndex());
+        else
+            sLog.outError("CastSpell: unknown spell id %i by caster: %s", spellId, GetObjectGuid().GetString().c_str());
         return;
     }
 
@@ -1077,7 +1080,10 @@ void Unit::CastSpell(Unit* Victim, SpellEntry const *spellInfo, bool triggered,
 {
     if(!spellInfo)
     {
-        sLog.outError("CastSpell: unknown spell by caster: %s", GetObjectGuid().GetString().c_str());
+        if (triggeredByAura)
+            sLog.outError("CastSpell: unknown spell by caster: %s triggered by aura %u (eff %u)", GetObjectGuid().GetString().c_str(), triggeredByAura->GetId(), triggeredByAura->GetEffIndex());
+        else
+            sLog.outError("CastSpell: unknown spell by caster: %s", GetObjectGuid().GetString().c_str());
         return;
     }
 
@@ -1101,7 +1107,10 @@ void Unit::CastCustomSpell(Unit* Victim,uint32 spellId, int32 const* bp0, int32
 
     if(!spellInfo)
     {
-        sLog.outError("CastCustomSpell: unknown spell id %i by caster: %s", spellId, GetObjectGuid().GetString().c_str());
+        if (triggeredByAura)
+            sLog.outError("CastCustomSpell: unknown spell id %i by caster: %s triggered by aura %u (eff %u)", spellId, GetObjectGuid().GetString().c_str(), triggeredByAura->GetId(), triggeredByAura->GetEffIndex());
+        else
+            sLog.outError("CastCustomSpell: unknown spell id %i by caster: %s", spellId, GetObjectGuid().GetString().c_str());
         return;
     }
 
@@ -1112,7 +1121,10 @@ void Unit::CastCustomSpell(Unit* Victim, SpellEntry const *spellInfo, int32 cons
 {
     if(!spellInfo)
     {
-        sLog.outError("CastCustomSpell: unknown spell by caster: %s", GetObjectGuid().GetString().c_str());
+        if (triggeredByAura)
+            sLog.outError("CastCustomSpell: unknown spell by caster: %s triggered by aura %u (eff %u)", GetObjectGuid().GetString().c_str(), triggeredByAura->GetId(), triggeredByAura->GetEffIndex());
+        else
+            sLog.outError("CastCustomSpell: unknown spell by caster: %s", GetObjectGuid().GetString().c_str());
         return;
     }
 
@@ -1146,7 +1158,10 @@ void Unit::CastSpell(float x, float y, float z, uint32 spellId, bool triggered,
 
     if(!spellInfo)
     {
-        sLog.outError("CastSpell(x,y,z): unknown spell id %i by caster: %s", spellId, GetObjectGuid().GetString().c_str());
+        if (triggeredByAura)
+            sLog.outError("CastSpell(x,y,z): unknown spell id %i by caster: %s triggered by aura %u (eff %u)", spellId, GetObjectGuid().GetString().c_str(), triggeredByAura->GetId(), triggeredByAura->GetEffIndex());
+        else
+            sLog.outError("CastSpell(x,y,z): unknown spell id %i by caster: %s", spellId, GetObjectGuid().GetString().c_str());
         return;
     }
 
@@ -1158,7 +1173,10 @@ void Unit::CastSpell(float x, float y, float z, SpellEntry const *spellInfo, boo
 {
     if(!spellInfo)
     {
-        sLog.outError("CastSpell(x,y,z): unknown spell by caster: %s", GetObjectGuid().GetString().c_str());
+        if (triggeredByAura)
+            sLog.outError("CastSpell(x,y,z): unknown spell by caster: %s triggered by aura %u (eff %u)", GetObjectGuid().GetString().c_str(), triggeredByAura->GetId(), triggeredByAura->GetEffIndex());
+        else
+            sLog.outError("CastSpell(x,y,z): unknown spell by caster: %s", GetObjectGuid().GetString().c_str());
         return;
     }
 
diff --git a/src/shared/revision_nr.h b/src/shared/revision_nr.h
index e08f10e15..4fd5c8c3b 100644
--- a/src/shared/revision_nr.h
+++ b/src/shared/revision_nr.h
@@ -1,4 +1,4 @@
 #ifndef __REVISION_NR_H__
 #define __REVISION_NR_H__
- #define REVISION_NR "10033"
+ #define REVISION_NR "10034"
 #endif // __REVISION_NR_H__