Linedef edit form, UDMF: front sidedef's Fields button was not shown.

Visual mode: fixed a crash after disabling GZDoom rendering effects (Tab key) when visual sector was not created for sector with 3d floor's control linedef.

Source/Core/Controls/ImageBrowserControl.cs

@@ -79,19 +79,6 @@ namespace CodeImp.DoomBuilder.Controls
 			// Initialize
 			InitializeComponent();
 			items = new List<ImageBrowserItem>();
-
-			//mxd
-			if(General.Map.Config.MixTexturesFlats) {
-				cbMixMode.SelectedIndex = mixMode;
-			} else {
-				labelMixMode.Visible = false;
-				cbMixMode.Visible = false;
-				label.Left = labelMixMode.Left;
-				objectname.Left = label.Right + label.Margin.Right + objectname.Margin.Left;
-				texturesizelabel.Left = objectname.Right + objectname.Margin.Right;
-				texturesize.Left = texturesizelabel.Right + texturesizelabel.Margin.Right;
-				mixMode = 0;
-			}
 		}
 		
 		// This applies the application settings
@@ -111,6 +98,19 @@ namespace CodeImp.DoomBuilder.Controls
 				int itemheight = General.Map.Data.Previews.MaxImageHeight + 26;
 				if(General.Settings.ShowTextureSizes) itemheight += 12;
 				list.TileSize = new Size(itemwidth, itemheight);
+
+				//mxd
+				if(General.Map.Config.MixTexturesFlats) {
+					cbMixMode.SelectedIndex = mixMode;
+				} else {
+					labelMixMode.Visible = false;
+					cbMixMode.Visible = false;
+					label.Left = labelMixMode.Left;
+					objectname.Left = label.Right + label.Margin.Right + objectname.Margin.Left;
+					texturesizelabel.Left = objectname.Right + objectname.Margin.Right;
+					texturesize.Left = texturesizelabel.Right + texturesizelabel.Margin.Right;
+					mixMode = 0;
+				}
 			}
 		}
 

Source/Core/Controls/ImageBrowserItem.cs

@@ -72,6 +72,10 @@ namespace CodeImp.DoomBuilder.Controls
 		// This checks if a redraw is needed
 		public bool CheckRedrawNeeded()
 		{
+			//mxd. Update texture size if needed
+			if(General.Settings.ShowTextureSizes && imageloaded != icon.IsPreviewLoaded)
+				displaytext = Text + "\n" + icon.ScaledWidth + " x " + icon.ScaledHeight;
+			
 			return (icon.IsPreviewLoaded != imageloaded);
 		}
 		
@@ -81,10 +85,6 @@ namespace CodeImp.DoomBuilder.Controls
 			Brush forecolor;
 			Brush backcolor;
 
-			//mxd. Update texture size if needed
-			if(General.Settings.ShowTextureSizes && imageloaded != icon.IsPreviewLoaded)
-				displaytext = Text + "\n" + icon.ScaledWidth + " x " + icon.ScaledHeight;
-
 			// Remember if the preview is loaded
 			imageloaded = icon.IsPreviewLoaded;
 

Source/Core/VisualModes/VisualMode.cs

@@ -943,7 +943,10 @@ namespace CodeImp.DoomBuilder.VisualModes
 		/// <summary>
 		/// This returns the VisualSector for the given Sector.
 		/// </summary>
-		public VisualSector GetVisualSector(Sector s) { return allsectors[s]; }
+		public VisualSector GetVisualSector(Sector s) {
+			if(!allsectors.ContainsKey(s)) return null; //mxd
+			return allsectors[s]; 
+		}
 		
 		/// <summary>
 		/// This returns the VisualThing for the given Thing.

Source/Core/Windows/LinedefEditForm.Designer.cs

@@ -863,7 +863,6 @@ namespace CodeImp.DoomBuilder.Windows
 			this.customfrontbutton.TabIndex = 3;
 			this.customfrontbutton.Text = "Custom fields...";
 			this.customfrontbutton.UseVisualStyleBackColor = true;
-			this.customfrontbutton.Visible = false;
 			this.customfrontbutton.Click += new System.EventHandler(this.customfrontbutton_Click);
 			// 
 			// frontlow
@@ -1194,7 +1193,6 @@ namespace CodeImp.DoomBuilder.Windows
 			this.custombackbutton.TabIndex = 3;
 			this.custombackbutton.Text = "Custom fields...";
 			this.custombackbutton.UseVisualStyleBackColor = true;
-			this.custombackbutton.Visible = false;
 			this.custombackbutton.Click += new System.EventHandler(this.custombackbutton_Click);
 			// 
 			// backlow

Source/Core/Windows/LinedefEditForm.cs

@@ -121,20 +121,15 @@ namespace CodeImp.DoomBuilder.Windows
 				fsAlpha.SetLimits(0f, 1f);
 			} else {
 				tabs.TabPages.Remove(tabcustom);
-
 				settingsGroup.Visible = false;
-
 				customfrontbutton.Visible = false;
 				custombackbutton.Visible = false;
-
 				labelLightFront.Visible = false;
 				lightFront.Visible = false;
 				cbLightAbsoluteFront.Visible = false;
-
 				labelLightBack.Visible = false;
 				lightBack.Visible = false;
 				cbLightAbsoluteBack.Visible = false;
-
 				udmfPropertiesFront.Visible = false;
 				udmfPropertiesBack.Visible = false;
 			}
@@ -423,8 +418,6 @@ namespace CodeImp.DoomBuilder.Windows
  
                     if (backoffsetx.Text != l.Back.OffsetX.ToString()) backoffsetx.Text = "";
                     if (backoffsety.Text != l.Back.OffsetY.ToString()) backoffsety.Text = "";
-
-					if(General.Map.FormatInterface.HasCustomFields) custombackbutton.Visible = true;
 				}
 				
 				// Custom fields

Source/Plugins/BuilderModes/VisualModes/SectorData.cs

@@ -184,7 +184,7 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			{
 				//mxd
 				BaseVisualSector vs = (BaseVisualSector)mode.GetVisualSector(s.Key);
-				if(vs.Changed) continue;
+				if(vs == null || vs.Changed) continue;
 
 				SectorData sd = mode.GetSectorData(s.Key);
 				sd.Reset();