Improve some exception types.

OpenRA.Game/Support/Log.cs

@@ -39,7 +39,7 @@ namespace OpenRA
 			ChannelInfo info;
 			lock (Channels)
 				if (!Channels.TryGetValue(channelName, out info))
-					throw new Exception("Tried logging to non-existent channel " + channelName);
+					throw new ArgumentException("Tried logging to non-existent channel " + channelName, "channelName");
 
 			return info;
 		}

OpenRA.Mods.Common/FileFormats/InstallShieldCABCompression.cs

@@ -322,7 +322,7 @@ namespace OpenRA.Mods.Common.FileFormats
 						fileOffset = head.FirstFileOffset;
 					}
 					else
-						throw new Exception("Cannot Resolve Remaining Stream");
+						throw new InvalidDataException("Cannot Resolve Remaining Stream");
 				}
 				else
 				{
@@ -403,7 +403,7 @@ namespace OpenRA.Mods.Common.FileFormats
 		void ExtractFile(FileDescriptor file, Stream output, Action<int> onProgress = null)
 		{
 			if (file.Flags.HasFlag(CABFlags.FileInvalid))
-				throw new Exception("File Invalid");
+				throw new InvalidDataException("File Invalid");
 
 			if (file.LinkFlags.HasFlag(LinkFlags.Prev))
 			{

OpenRA.Mods.Common/Graphics/DefaultSpriteSequence.cs

@@ -48,7 +48,7 @@ namespace OpenRA.Mods.Common.Graphics
 			}
 			catch (Exception e)
 			{
-				throw new Exception("Error occurred while parsing {0}".F(node.Key), e);
+				throw new InvalidDataException("Error occurred while parsing {0}".F(node.Key), e);
 			}
 
 			foreach (var kvp in nodes)

OpenRA.Mods.Common/ServerTraits/LobbyCommands.cs

@@ -756,7 +756,7 @@ namespace OpenRA.Mods.Common.Server
 			var uid = server.LobbyInfo.GlobalSettings.Map;
 			server.Map = server.ModData.MapCache[uid];
 			if (server.Map.Status != MapStatus.Available)
-				throw new Exception("Map {0} not found".F(uid));
+				throw new InvalidOperationException("Map {0} not found".F(uid));
 
 			server.LobbyInfo.Slots = server.Map.Players.Players
 				.Select(p => MakeSlotFromPlayerReference(p.Value))

OpenRA.Mods.Common/Traits/Multipliers/UpgradableMultiplierTrait.cs

@@ -45,7 +45,7 @@ namespace OpenRA.Mods.Common.Traits
 		protected UpgradeMultiplierTrait(UpgradeMultiplierTraitInfo info, string modifierType, string actorType)
 		{
 			if (info.Modifier.Length == 0)
-				throw new Exception("No modifiers in " + modifierType + " for " + actorType);
+				throw new ArgumentException("No modifiers in " + modifierType + " for " + actorType);
 			this.info = info;
 			IsTraitDisabled = info.UpgradeTypes.Length > 0 && info.BaseLevel > 0;
 			level = IsTraitDisabled ? 0 : info.BaseLevel;

OpenRA.Mods.D2k/UtilityCommands/D2kMapImporter.cs

@@ -276,7 +276,7 @@ namespace OpenRA.Mods.D2k.UtilityCommands
 				stream = File.OpenRead(filename);
 
 				if (stream.Length == 0 || stream.Length % 4 != 0)
-					throw new Exception("The map is in an unrecognized format!");
+					throw new ArgumentException("The map is in an unrecognized format!", "filename");
 
 				Initialize(filename);
 				FillMap();