diff --git a/repository/Grafoscopio/GrafoscopioNewNotebook.class.st b/repository/Grafoscopio/GrafoscopioNewNotebook.class.st
index cf997f8..7316f96 100644
--- a/repository/Grafoscopio/GrafoscopioNewNotebook.class.st
+++ b/repository/Grafoscopio/GrafoscopioNewNotebook.class.st
@@ -362,20 +362,22 @@ GrafoscopioNewNotebook >> exportLinkContent [
 { #category : #persistence }
 GrafoscopioNewNotebook >> exportNode: aGrafoscopioNode asMarkdownIn: aFile [
 	"I export the current tree/document to a markdown file"
+
 	aFile ensureDelete.
-	aFile 
+	aFile
 		ensureCreateFile;
-		writeStreamDo: [:stream | 
-			stream 
-				nextPutAll: 
-					('---', String cr,
-					'exportedFrom: ', self checksumForRootSubtree, String cr) withInternetLineEndings.
+		writeStreamDo: [ :stream | 
+			stream
+				nextPutAll:
+					('---' , String cr , 'exportedFrom: ' , self checksumForRootSubtree
+						, String cr) withInternetLineEndings.
 			aGrafoscopioNode metadataAsYamlIn: stream.
-			stream 
-				nextPutAll: 
-					('---', String cr, String cr) withInternetLineEndings,
-					aGrafoscopioNode asMarkdown ].
-		self inform: 'Exported as: ', String cr, aFile fullName
+			stream
+				nextPutAll:
+					('---' , String cr , String cr) withInternetLineEndings
+						, aGrafoscopioNode asMarkdown.
+			stream flush ].
+	self inform: 'Exported as: ' , String cr , aFile fullName
 ]
 
 { #category : #persistence }
@@ -513,8 +515,8 @@ GrafoscopioNewNotebook >> initializePresenter [
 					item := tree selectedItem.
 					tree selectedItem header: arg.
 					tree selectedItem updateEditionTimestamp.
-					tree roots: tree roots.
-					tree selectItem: item ] ].
+"					tree roots: tree roots."
+"					tree selectItem: item "] ].
 	links
 		whenTextChangedDo: [ :arg | 
 			(tree respondsTo: #link:)
@@ -1036,6 +1038,7 @@ GrafoscopioNewNotebook >> selectedItem: aGrafoscopioTextNode path: aPath [
 
 { #category : #'asdas yet unclassified' }
 GrafoscopioNewNotebook >> selectedPathNextTo: aPath [
+	aPath isEmpty ifTrue: [ ^ self ].
 	aPath
 		at: aPath size
 		put: (aPath at: aPath size) + 1.
diff --git a/repository/Grafoscopio/GrafoscopioTextNode.class.st b/repository/Grafoscopio/GrafoscopioTextNode.class.st
index bc6fbf9..17b28f6 100644
--- a/repository/Grafoscopio/GrafoscopioTextNode.class.st
+++ b/repository/Grafoscopio/GrafoscopioTextNode.class.st
@@ -649,7 +649,7 @@ GrafoscopioTextNode >> markdownContent [
 GrafoscopioTextNode >> metadata [
 	| mnode |
 	mnode := self root preorderTraversal 
-		detect: [ :n | n headerStartsWith: '%metadata' ]
+		detect: [ :n | n header beginsWith: '%metadata' ]
 		ifNone: [ ^ nil ].
 	^ mnode output.