diff --git a/d2compiler/compile.go b/d2compiler/compile.go
index c1a252440..07d450257 100644
--- a/d2compiler/compile.go
+++ b/d2compiler/compile.go
@@ -708,7 +708,8 @@ func (c *compiler) validateKey(obj *d2graph.Object, f *d2ir.Field) {
 		case "rows", "columns":
 			for _, child := range obj.ChildrenArray {
 				if child.IsContainer() {
-					c.errorf(f.LastPrimaryKey(), fmt.Sprintf(`invalid grid diagram %#v. can only set %#v with no descendants (see %#v)`, obj.AbsID(), keyword, child.ChildrenArray[0].AbsID()))
+					c.errorf(f.LastPrimaryKey(),
+						fmt.Sprintf(`%#v can only be used on containers with one level of nesting right now. (%#v has nested %#v)`, keyword, child.AbsID(), child.ChildrenArray[0].ID))
 				}
 			}
 		}
@@ -796,12 +797,12 @@ func (c *compiler) validateNear(g *d2graph.Graph) {
 
 func (c *compiler) validateEdges(g *d2graph.Graph) {
 	for _, edge := range g.Edges {
-		if gd := edge.Src.ClosestGridDiagram(); gd != nil {
-			c.errorf(edge.GetAstEdge(), "edge %#v cannot enter grid diagram %#v", d2format.Format(edge.GetAstEdge()), gd.AbsID())
+		if gd := edge.Src.Parent.ClosestGridDiagram(); gd != nil {
+			c.errorf(edge.GetAstEdge(), "edges in grid diagrams are not supported yet")
 			continue
 		}
-		if gd := edge.Dst.ClosestGridDiagram(); gd != nil {
-			c.errorf(edge.GetAstEdge(), "edge %#v cannot enter grid diagram %#v", d2format.Format(edge.GetAstEdge()), gd.AbsID())
+		if gd := edge.Dst.Parent.ClosestGridDiagram(); gd != nil {
+			c.errorf(edge.GetAstEdge(), "edges in grid diagrams are not supported yet")
 			continue
 		}
 	}
diff --git a/d2compiler/compile_test.go b/d2compiler/compile_test.go
index a031203ea..92d8fd41e 100644
--- a/d2compiler/compile_test.go
+++ b/d2compiler/compile_test.go
@@ -2299,9 +2299,9 @@ obj {
 
 	hey -> c: ok
 `,
-			expErr: `d2/testdata/d2compiler/TestCompile/grid_edge.d2:3:2: edge "a -> b" cannot enter grid diagram "hey"
-d2/testdata/d2compiler/TestCompile/grid_edge.d2:5:2: edge "c -> hey.b" cannot enter grid diagram "hey"
-d2/testdata/d2compiler/TestCompile/grid_edge.d2:6:2: edge "hey.a -> c" cannot enter grid diagram "hey"`,
+			expErr: `d2/testdata/d2compiler/TestCompile/grid_edge.d2:3:2: edges in grid diagrams are not supported yet
+d2/testdata/d2compiler/TestCompile/grid_edge.d2:5:2: edges in grid diagrams are not supported yet
+d2/testdata/d2compiler/TestCompile/grid_edge.d2:6:2: edges in grid diagrams are not supported yet`,
 		},
 		{
 			name: "grid_nested",
@@ -2315,8 +2315,8 @@ d2/testdata/d2compiler/TestCompile/grid_edge.d2:6:2: edge "hey.a -> c" cannot en
 	d.invalid descendant
 }
 `,
-			expErr: `d2/testdata/d2compiler/TestCompile/grid_nested.d2:2:2: invalid grid diagram "hey". can only set "rows" with no descendants (see "hey.d.invalid descendant")
-d2/testdata/d2compiler/TestCompile/grid_nested.d2:3:2: invalid grid diagram "hey". can only set "columns" with no descendants (see "hey.d.invalid descendant")`,
+			expErr: `d2/testdata/d2compiler/TestCompile/grid_nested.d2:2:2: "rows" can only be used on containers with one level of nesting right now. ("hey.d" has nested "invalid descendant")
+d2/testdata/d2compiler/TestCompile/grid_nested.d2:3:2: "columns" can only be used on containers with one level of nesting right now. ("hey.d" has nested "invalid descendant")`,
 		},
 	}
 
diff --git a/d2graph/grid_diagram.go b/d2graph/grid_diagram.go
index ec41e0460..9f1aff9e9 100644
--- a/d2graph/grid_diagram.go
+++ b/d2graph/grid_diagram.go
@@ -6,11 +6,11 @@ func (obj *Object) IsGridDiagram() bool {
 }
 
 func (obj *Object) ClosestGridDiagram() *Object {
-	if obj.Parent == nil {
+	if obj == nil {
 		return nil
 	}
-	if obj.Parent.IsGridDiagram() {
-		return obj.Parent
+	if obj.IsGridDiagram() {
+		return obj
 	}
 	return obj.Parent.ClosestGridDiagram()
 }
diff --git a/d2layouts/d2grid/grid_diagram.go b/d2layouts/d2grid/grid_diagram.go
index 6b4d8dfb3..bb68aad79 100644
--- a/d2layouts/d2grid/grid_diagram.go
+++ b/d2layouts/d2grid/grid_diagram.go
@@ -2,6 +2,7 @@ package d2grid
 
 import (
 	"strconv"
+	"strings"
 
 	"oss.terrastruct.com/d2/d2graph"
 )
@@ -79,7 +80,7 @@ func (gd *gridDiagram) cleanup(obj *d2graph.Object, graph *d2graph.Graph) {
 	obj.Children = make(map[string]*d2graph.Object)
 	obj.ChildrenArray = make([]*d2graph.Object, 0)
 	for _, child := range gd.objects {
-		obj.Children[child.ID] = child
+		obj.Children[strings.ToLower(child.ID)] = child
 		obj.ChildrenArray = append(obj.ChildrenArray, child)
 	}
 	graph.Objects = append(graph.Objects, gd.objects...)
diff --git a/d2layouts/d2near/layout.go b/d2layouts/d2near/layout.go
index 082a0e296..695fda827 100644
--- a/d2layouts/d2near/layout.go
+++ b/d2layouts/d2near/layout.go
@@ -34,7 +34,7 @@ func Layout(ctx context.Context, g *d2graph.Graph, constantNears []*d2graph.Obje
 			if processCenters == strings.Contains(d2graph.Key(obj.Attributes.NearKey)[0], "-center") {
 				// The z-index for constant nears does not matter, as it will not collide
 				g.Objects = append(g.Objects, obj)
-				obj.Parent.Children[obj.ID] = obj
+				obj.Parent.Children[strings.ToLower(obj.ID)] = obj
 				obj.Parent.ChildrenArray = append(obj.Parent.ChildrenArray, obj)
 			}
 		}
diff --git a/d2layouts/d2sequence/layout.go b/d2layouts/d2sequence/layout.go
index a2c7df0a5..0da870f19 100644
--- a/d2layouts/d2sequence/layout.go
+++ b/d2layouts/d2sequence/layout.go
@@ -171,12 +171,12 @@ func cleanup(g *d2graph.Graph, sequenceDiagrams map[string]*sequenceDiagram, obj
 		obj.Children = make(map[string]*d2graph.Object)
 		obj.ChildrenArray = make([]*d2graph.Object, 0)
 		for _, child := range sd.actors {
-			obj.Children[child.ID] = child
+			obj.Children[strings.ToLower(child.ID)] = child
 			obj.ChildrenArray = append(obj.ChildrenArray, child)
 		}
 		for _, child := range sd.groups {
 			if child.Parent.AbsID() == obj.AbsID() {
-				obj.Children[child.ID] = child
+				obj.Children[strings.ToLower(child.ID)] = child
 				obj.ChildrenArray = append(obj.ChildrenArray, child)
 			}
 		}
diff --git a/testdata/d2compiler/TestCompile/grid_edge.exp.json b/testdata/d2compiler/TestCompile/grid_edge.exp.json
index dee805205..d8b36c51b 100644
--- a/testdata/d2compiler/TestCompile/grid_edge.exp.json
+++ b/testdata/d2compiler/TestCompile/grid_edge.exp.json
@@ -5,15 +5,15 @@
     "errs": [
       {
         "range": "d2/testdata/d2compiler/TestCompile/grid_edge.d2,2:1:17-2:7:23",
-        "errmsg": "d2/testdata/d2compiler/TestCompile/grid_edge.d2:3:2: edge \"a -> b\" cannot enter grid diagram \"hey\""
+        "errmsg": "d2/testdata/d2compiler/TestCompile/grid_edge.d2:3:2: edges in grid diagrams are not supported yet"
       },
       {
         "range": "d2/testdata/d2compiler/TestCompile/grid_edge.d2,4:1:27-4:11:37",
-        "errmsg": "d2/testdata/d2compiler/TestCompile/grid_edge.d2:5:2: edge \"c -> hey.b\" cannot enter grid diagram \"hey\""
+        "errmsg": "d2/testdata/d2compiler/TestCompile/grid_edge.d2:5:2: edges in grid diagrams are not supported yet"
       },
       {
         "range": "d2/testdata/d2compiler/TestCompile/grid_edge.d2,5:1:39-5:11:49",
-        "errmsg": "d2/testdata/d2compiler/TestCompile/grid_edge.d2:6:2: edge \"hey.a -> c\" cannot enter grid diagram \"hey\""
+        "errmsg": "d2/testdata/d2compiler/TestCompile/grid_edge.d2:6:2: edges in grid diagrams are not supported yet"
       }
     ]
   }
diff --git a/testdata/d2compiler/TestCompile/grid_nested.exp.json b/testdata/d2compiler/TestCompile/grid_nested.exp.json
index a45781692..ff55b27e7 100644
--- a/testdata/d2compiler/TestCompile/grid_nested.exp.json
+++ b/testdata/d2compiler/TestCompile/grid_nested.exp.json
@@ -5,11 +5,11 @@
     "errs": [
       {
         "range": "d2/testdata/d2compiler/TestCompile/grid_nested.d2,1:1:8-1:10:17",
-        "errmsg": "d2/testdata/d2compiler/TestCompile/grid_nested.d2:2:2: invalid grid diagram \"hey\". can only set \"rows\" with no descendants (see \"hey.d.invalid descendant\")"
+        "errmsg": "d2/testdata/d2compiler/TestCompile/grid_nested.d2:2:2: \"rows\" can only be used on containers with one level of nesting right now. (\"hey.d\" has nested \"invalid descendant\")"
       },
       {
         "range": "d2/testdata/d2compiler/TestCompile/grid_nested.d2,2:1:19-2:13:31",
-        "errmsg": "d2/testdata/d2compiler/TestCompile/grid_nested.d2:3:2: invalid grid diagram \"hey\". can only set \"columns\" with no descendants (see \"hey.d.invalid descendant\")"
+        "errmsg": "d2/testdata/d2compiler/TestCompile/grid_nested.d2:3:2: \"columns\" can only be used on containers with one level of nesting right now. (\"hey.d\" has nested \"invalid descendant\")"
       }
     ]
   }