diff --git a/BizHawk.Client.Common/lua/EmuLuaLibrary.Memory.cs b/BizHawk.Client.Common/lua/EmuLuaLibrary.Memory.cs
index 0378357190..4ac8b675ce 100644
--- a/BizHawk.Client.Common/lua/EmuLuaLibrary.Memory.cs
+++ b/BizHawk.Client.Common/lua/EmuLuaLibrary.Memory.cs
@@ -109,14 +109,14 @@ namespace BizHawk.Client.Common
 				}
 				else
 				{
-					Log(string.Format("Unable to find domain: ", domain));
+					Log(string.Format("Unable to find domain: {0}", domain));
 					return false;
 				}
 
 			}
 			catch // Just in case
 			{
-				Log(string.Format("Unable to find domain: ", domain));
+				Log(string.Format("Unable to find domain: {0}", domain));
 			}
 
 			return false;
diff --git a/BizHawk.Client.Common/lua/LuaMemoryBase.cs b/BizHawk.Client.Common/lua/LuaMemoryBase.cs
index e785332949..9c92cc52b1 100644
--- a/BizHawk.Client.Common/lua/LuaMemoryBase.cs
+++ b/BizHawk.Client.Common/lua/LuaMemoryBase.cs
@@ -55,14 +55,21 @@ namespace BizHawk.Client.Common
 
 		protected void WriteUnsignedByte(int addr, uint v)
 		{
-			if (addr < Domain.Size)
+			if (Domain.CanPoke())
 			{
-				Domain.PokeByte(addr, (byte)v);
+				if (addr < Domain.Size)
+				{
+					Domain.PokeByte(addr, (byte)v);
+				}
+				else
+				{
+					Log("Warning: attempted write to " + addr +
+					" outside the memory size of " + Domain.Size);
+				}
 			}
 			else
 			{
-				Log("Warning: attempted write to " + addr +
-				" outside the memory size of " + Domain.Size);
+				Log(string.Format("Error: the domain {0} is not writable", Domain.Name));
 			}
 		}
 
@@ -170,19 +177,26 @@ namespace BizHawk.Client.Common
 
 		protected void WriteByteRange(LuaTable memoryblock)
 		{
-			foreach (var address in memoryblock.Keys)
+			if (Domain.CanPoke())
 			{
-				var addr = LuaInt(address);
-				if (addr < Domain.Size)
+				foreach (var address in memoryblock.Keys)
 				{
-					Domain.PokeByte(addr, (byte)LuaInt(memoryblock[address]));
-				}
-				else
-				{
-					Log("Warning: Attempted write " + addr + " outside memory domain size of " +
-						Domain.Size + " in writebyterange()");
+					var addr = LuaInt(address);
+					if (addr < Domain.Size)
+					{
+						Domain.PokeByte(addr, (byte)LuaInt(memoryblock[address]));
+					}
+					else
+					{
+						Log("Warning: Attempted write " + addr + " outside memory domain size of " +
+							Domain.Size + " in writebyterange()");
+					}
 				}
 			}
+			else
+			{
+				Log(string.Format("Error: the domain {0} is not writable", Domain.Name));
+			}
 		}
 
 		protected float ReadFloat(int addr, bool bigendian)
@@ -204,17 +218,24 @@ namespace BizHawk.Client.Common
 
 		protected void WriteFloat(int addr, double value, bool bigendian)
 		{
-			if (addr < Domain.Size)
+			if (Domain.CanPoke())
 			{
-				var dv = (float)value;
-				var bytes = BitConverter.GetBytes(dv);
-				var v = BitConverter.ToUInt32(bytes, 0);
-				Domain.PokeDWord(addr, v, bigendian);
+				if (addr < Domain.Size)
+				{
+					var dv = (float)value;
+					var bytes = BitConverter.GetBytes(dv);
+					var v = BitConverter.ToUInt32(bytes, 0);
+					Domain.PokeDWord(addr, v, bigendian);
+				}
+				else
+				{
+					Log("Warning: Attempted write " + addr +
+						" outside memory size of " + Domain.Size);
+				}
 			}
 			else
 			{
-				Log("Warning: Attempted write " + addr + 
-					" outside memory size of " + Domain.Size);
+				Log(string.Format("Error: the domain {0} is not writable", Domain.Name));
 			}
 		}