diff --git a/.travis.yml b/.travis.yml
index dff5f3a..9bcf999 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1 +1,3 @@
 language: java
+jdk:
+  - oraclejdk8
diff --git a/src/main/java/buttondevteam/core/CommandCaller.java b/src/main/java/buttondevteam/core/CommandCaller.java
index 688dd0d..26b0c47 100644
--- a/src/main/java/buttondevteam/core/CommandCaller.java
+++ b/src/main/java/buttondevteam/core/CommandCaller.java
@@ -7,7 +7,6 @@ import org.bukkit.command.CommandSender;
 import org.bukkit.command.PluginCommand;
 import org.bukkit.plugin.java.JavaPlugin;
 import buttondevteam.lib.TBMCCoreAPI;
-import buttondevteam.lib.chat.CommandClass;
 import buttondevteam.lib.chat.TBMCChatAPI;
 import buttondevteam.lib.chat.TBMCCommandBase;
 
diff --git a/src/main/java/buttondevteam/lib/TBMCCoreAPI.java b/src/main/java/buttondevteam/lib/TBMCCoreAPI.java
index a80923c..217443c 100644
--- a/src/main/java/buttondevteam/lib/TBMCCoreAPI.java
+++ b/src/main/java/buttondevteam/lib/TBMCCoreAPI.java
@@ -81,6 +81,16 @@ public class TBMCCoreAPI {
 			error(sender, "Can't find branch \"" + branch + "\" for plugin \"" + correctname + "\"");
 			return false;
 		}
+		try {
+			if (DownloadString("https://raw.githubusercontent.com/TBMCPlugins/" + correctname + "/"
+					+ correctbranch.get() + "/pom.xml").equals("404: Not Found\n")) {
+				error(sender, "The plugin doesn't appear to have a pom.xml. Make sure it's a Maven project.");
+				return false;
+			}
+		} catch (IOException e1) {
+			error(sender, "The plugin doesn't appear to have a pom.xml. Make sure it's a Maven project.\n" + e1);
+			return false;
+		}
 		info(sender, "Updating TBMC plugin: " + correctname + " from " + correctbranch.get());
 		URL url;
 		final boolean isWindows = System.getProperty("os.name").contains("Windows");
diff --git a/src/main/java/buttondevteam/lib/player/ChromaGamerBase.java b/src/main/java/buttondevteam/lib/player/ChromaGamerBase.java
index d22d120..5d7b1b1 100644
--- a/src/main/java/buttondevteam/lib/player/ChromaGamerBase.java
+++ b/src/main/java/buttondevteam/lib/player/ChromaGamerBase.java
@@ -7,13 +7,16 @@ import java.util.function.Consumer;
 
 import org.bukkit.Bukkit;
 import org.bukkit.configuration.file.YamlConfiguration;
+
+import com.google.common.collect.HashBiMap;
+
 import buttondevteam.lib.TBMCCoreAPI;
 
 @ChromaGamerEnforcer
 public abstract class ChromaGamerBase implements AutoCloseable {
 	public static final String TBMC_PLAYERS_DIR = "TBMC/players/";
 
-	private static final HashMap<Class<?>, String> playerTypes = new HashMap<>();
+	private static final HashBiMap<Class<?>, String> playerTypes = HashBiMap.create();
 
 	/**
 	 * Used for connecting with every type of user ({@link #connectWith(ChromaGamerBase)})
@@ -32,7 +35,7 @@ public abstract class ChromaGamerBase implements AutoCloseable {
 	 * Returns the folder name for the given player class.
 	 * 
 	 * @param cl
-	 *            The class to get the folder from (like {@link TBMCPlayerBase} or one of it's subclasses
+	 *            The class to get the folder from (like {@link TBMCPlayerBase} or one of it's subclasses)
 	 * @return The folder name for the given type
 	 * @throws RuntimeException
 	 *             If the class doesn't have the {@link UserClass} annotation.
@@ -45,6 +48,17 @@ public abstract class ChromaGamerBase implements AutoCloseable {
 		throw new RuntimeException("Class not registered as a user class! Use @UserClass or @AbstractUserClass");
 	}
 
+	/**
+	 * Returns the player class for the given folder name.
+	 * 
+	 * @param foldername
+	 *            The folder to get the class from (like "minecraft")
+	 * @return The type for the given folder name or null if not found
+	 */
+	public static Class<?> getTypeForFolder(String foldername) {
+		return playerTypes.inverse().get(foldername);
+	}
+
 	/**
 	 * This method returns the filename for this player data. For example, for Minecraft-related data, MC UUIDs, for Discord data, use Discord IDs, etc.<br>
 	 * <b>Does not include .yml</b>