Check if save folder exists for better error messages

core/src/main/java/com/seibel/distanthorizons/core/level/AbstractDhServerLevel.java

@@ -28,6 +28,7 @@ import com.seibel.distanthorizons.core.wrapperInterfaces.world.IServerLevelWrapp
 import com.seibel.distanthorizons.core.logging.DhLogger;
 import org.jetbrains.annotations.NotNull;
 
+import java.io.File;
 import java.io.IOException;
 import java.sql.SQLException;
 import java.util.List;
@@ -70,9 +71,11 @@ public abstract class AbstractDhServerLevel extends AbstractDhLevel implements I
 			boolean runRepoReliantSetup
 		) throws SQLException, IOException
 	{
-		if (saveStructure.getSaveFolder(serverLevelWrapper).mkdirs())
+		File saveFolder = saveStructure.getSaveFolder(serverLevelWrapper);
+		saveFolder.mkdirs();
+		if (!saveFolder.exists())
 		{
-			LOGGER.warn("unable to create data folder.");
+			throw new IOException("unable to create save folder at ["+saveFolder.getPath()+"]. If you're on Windows you may need to enable long file paths.");
 		}
 		this.serverLevelWrapper = serverLevelWrapper;
 		this.serverside = new ServerLevelModule(this, saveStructure);

core/src/main/java/com/seibel/distanthorizons/core/level/DhClientLevel.java

@@ -115,16 +115,19 @@ public class DhClientLevel extends AbstractDhLevel implements IDhClientLevel
 		File saveFolder = saveStructure.getSaveFolder(clientLevelWrapper);
 		File pre23Folder = saveStructure.getPre23SaveFolder(clientLevelWrapper);
 		
+		saveFolder.mkdirs();
+		
 		if (pre23Folder.exists())
 		{
 			if (!pre23Folder.renameTo(saveFolder))
 			{
-				throw new RuntimeException("Could not move old save data folder: " + pre23Folder.getAbsolutePath() + " to " + saveFolder.getAbsolutePath());
+				throw new RuntimeException("Could not move old save data folder: [" + pre23Folder.getAbsolutePath() + "] to [" + saveFolder.getAbsolutePath() + "].");
 			}
 		}
-		else if (saveStructure.getSaveFolder(clientLevelWrapper).mkdirs())
+		
+		if (!saveFolder.exists())
 		{
-			LOGGER.warn("unable to create data folder.");
+			throw new IOException("unable to create save folder at ["+saveFolder.getPath()+"]. If you're on Windows you may need to enable long file paths.");
 		}
 		
 		this.levelWrapper = clientLevelWrapper;

core/src/main/java/com/seibel/distanthorizons/core/world/DhClientServerWorld.java

@@ -104,7 +104,8 @@ public class DhClientServerWorld extends AbstractDhServerWorld<DhClientServerLev
 					
 					ClientApi.INSTANCE.showChatMessageNextFrame(// red text		
 						r + "Distant Horizons: ClientServer level loading failed." + cf + "\n" +
-						"Unable to load level ["+y+levelWrapper.getDhIdentifier()+cf+"], LODs may not appear. See log for more information.");
+						"Unable to load level ["+y+levelWrapper.getDhIdentifier()+cf+"], LODs may not appear. See log for more information.\n" +
+						"");
 					
 					return null;
 				}

core/src/main/java/com/seibel/distanthorizons/core/world/DhClientWorld.java

@@ -152,7 +152,8 @@ public class DhClientWorld extends AbstractDhWorld implements IDhClientWorld
 			
 			ClientApi.INSTANCE.showChatMessageNextFrame(
 				r + "Distant Horizons: Client level loading failed." + cf + "\n" +
-				"Unable to load level ["+y+clientLevelWrapper.getDhIdentifier()+cf+"], LODs may not appear. See log for more information.");
+				"Unable to load level ["+y+clientLevelWrapper.getDhIdentifier()+cf+"], LODs may not appear. See log for more information. \n" +
+				"");
 			
 			return null;
 		}

core/src/main/java/com/seibel/distanthorizons/core/world/DhServerWorld.java

@@ -81,7 +81,8 @@ public class DhServerWorld extends AbstractDhServerWorld<DhServerLevel>
 					
 					ClientApi.INSTANCE.showChatMessageNextFrame(
 						r + "Distant Horizons: Server level loading failed." + cf + "\n" +
-						"Unable to load level ["+y+serverLevelWrapper.getDhIdentifier()+cf+"], LODs may not appear. See log for more information.");
+						"Unable to load level ["+y+serverLevelWrapper.getDhIdentifier()+cf+"], LODs may not appear. See log for more information.\n" +
+						"");
 					
 					return null;
 				}