diff --git a/src/com/sheepit/client/Client.java b/src/com/sheepit/client/Client.java
index 134e75d..975839e 100644
--- a/src/com/sheepit/client/Client.java
+++ b/src/com/sheepit/client/Client.java
@@ -949,6 +949,7 @@ import lombok.Data;
 					confirmJobReturnCode = Error.Type.SESSION_DISABLED;
 					break retryLoop;
 				
+				case JOB_VALIDATION_ERROR_IMAGE_WRONG_DIMENSION:
 				case JOB_VALIDATION_ERROR_MISSING_PARAMETER:
 					// no point to retry the request
 					confirmJobReturnCode = Error.Type.UNKNOWN;
diff --git a/src/com/sheepit/client/Error.java b/src/com/sheepit/client/Error.java
index 47bfb50..638a9aa 100644
--- a/src/com/sheepit/client/Error.java
+++ b/src/com/sheepit/client/Error.java
@@ -22,11 +22,34 @@ package com.sheepit.client;
 public class Error {
 	public enum Type {
 		// id have to be kept synchronised with the server side.
-		OK(0), UNKNOWN(99), WRONG_CONFIGURATION(1), AUTHENTICATION_FAILED(2), TOO_OLD_CLIENT(3), SESSION_DISABLED(4), RENDERER_NOT_AVAILABLE(
-				5), MISSING_RENDERER(6), MISSING_SCENE(7), NOOUTPUTFILE(8), IMAGE_TOO_LARGE(26), DOWNLOAD_FILE(9), CAN_NOT_CREATE_DIRECTORY(10), NETWORK_ISSUE(11), RENDERER_CRASHED(
-				12), RENDERER_CRASHED_PYTHON_ERROR(24), RENDERER_OUT_OF_VIDEO_MEMORY(13), RENDERER_OUT_OF_MEMORY(21), RENDERER_KILLED(
-				14), RENDERER_KILLED_BY_USER(20), RENDERER_KILLED_BY_USER_OVER_TIME(23), RENDERER_KILLED_BY_SERVER(22), RENDERER_MISSING_LIBRARIES(
-				15), FAILED_TO_EXECUTE(16), OS_NOT_SUPPORTED(17), CPU_NOT_SUPPORTED(18), GPU_NOT_SUPPORTED(19), VALIDATION_FAILED(25),
+		OK(0),
+		UNKNOWN(99),
+		WRONG_CONFIGURATION(1),
+		AUTHENTICATION_FAILED(2),
+		TOO_OLD_CLIENT(3),
+		SESSION_DISABLED(4),
+		RENDERER_NOT_AVAILABLE(5),
+		MISSING_RENDERER(6),
+		MISSING_SCENE(7),
+		NOOUTPUTFILE(8),
+		IMAGE_TOO_LARGE(26),
+		DOWNLOAD_FILE(9),
+		CAN_NOT_CREATE_DIRECTORY(10),
+		NETWORK_ISSUE(11),
+		RENDERER_CRASHED(12),
+		RENDERER_CRASHED_PYTHON_ERROR(24),
+		RENDERER_OUT_OF_VIDEO_MEMORY(13),
+		RENDERER_OUT_OF_MEMORY(21),
+		RENDERER_KILLED(14),
+		RENDERER_KILLED_BY_USER(20),
+		RENDERER_KILLED_BY_USER_OVER_TIME(23),
+		RENDERER_KILLED_BY_SERVER(22),
+		RENDERER_MISSING_LIBRARIES(15),
+		FAILED_TO_EXECUTE(16),
+		OS_NOT_SUPPORTED(17),
+		CPU_NOT_SUPPORTED(18),
+		GPU_NOT_SUPPORTED(19),
+		VALIDATION_FAILED(25),
 		
 		// internal error handling
 		NO_SPACE_LEFT_ON_DEVICE(100), ERROR_BAD_RESPONSE(101),
@@ -44,19 +67,31 @@ public class Error {
 	}
 	
 	public enum ServerCode {
-		OK(0), UNKNOWN(999),
+		OK(0),
+		UNKNOWN(999),
 		
-		CONFIGURATION_ERROR_NO_CLIENT_VERSION_GIVEN(100), CONFIGURATION_ERROR_CLIENT_TOO_OLD(101), CONFIGURATION_ERROR_AUTH_FAILED(
-				102), CONFIGURATION_ERROR_WEB_SESSION_EXPIRED(103), CONFIGURATION_ERROR_MISSING_PARAMETER(104),
+		CONFIGURATION_ERROR_NO_CLIENT_VERSION_GIVEN(100),
+		CONFIGURATION_ERROR_CLIENT_TOO_OLD(101),
+		CONFIGURATION_ERROR_AUTH_FAILED(102),
+		CONFIGURATION_ERROR_WEB_SESSION_EXPIRED(103),
+		CONFIGURATION_ERROR_MISSING_PARAMETER(104),
 		
-		JOB_REQUEST_NOJOB(200), JOB_REQUEST_ERROR_NO_RENDERING_RIGHT(201), JOB_REQUEST_ERROR_DEAD_SESSION(202), JOB_REQUEST_ERROR_SESSION_DISABLED(
-				203), JOB_REQUEST_ERROR_INTERNAL_ERROR(204), JOB_REQUEST_ERROR_RENDERER_NOT_AVAILABLE(205), JOB_REQUEST_SERVER_IN_MAINTENANCE(
-				206), JOB_REQUEST_SERVER_OVERLOADED(207),
+		JOB_REQUEST_NOJOB(200),
+		JOB_REQUEST_ERROR_NO_RENDERING_RIGHT(201),
+		JOB_REQUEST_ERROR_DEAD_SESSION(202),
+		JOB_REQUEST_ERROR_SESSION_DISABLED(203),
+		JOB_REQUEST_ERROR_INTERNAL_ERROR(204),
+		JOB_REQUEST_ERROR_RENDERER_NOT_AVAILABLE(205),
+		JOB_REQUEST_SERVER_IN_MAINTENANCE(206),
+		JOB_REQUEST_SERVER_OVERLOADED(207),
 		
-		JOB_VALIDATION_ERROR_MISSING_PARAMETER(300), JOB_VALIDATION_ERROR_BROKEN_MACHINE(301), // in GPU the generated frame is black
-		JOB_VALIDATION_ERROR_FRAME_IS_NOT_IMAGE(302), JOB_VALIDATION_ERROR_UPLOAD_FAILED(303), JOB_VALIDATION_ERROR_SESSION_DISABLED(
-				304), // missing heartbeat or broken machine
+		JOB_VALIDATION_ERROR_MISSING_PARAMETER(300),
+		JOB_VALIDATION_ERROR_BROKEN_MACHINE(301), // in GPU the generated frame is black
+		JOB_VALIDATION_ERROR_FRAME_IS_NOT_IMAGE(302),
+		JOB_VALIDATION_ERROR_UPLOAD_FAILED(303),
+		JOB_VALIDATION_ERROR_SESSION_DISABLED(304), // missing heartbeat or broken machine
 		JOB_VALIDATION_IMAGE_TOO_LARGE(306),
+		JOB_VALIDATION_ERROR_IMAGE_WRONG_DIMENSION(308),
 		
 		KEEPMEALIVE_STOP_RENDERING(400),