diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 5b95bb0..00cb46a 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -20,8 +20,8 @@ android {
         applicationId = "com.docmost.app"
         minSdk = 26
         targetSdk = 34
-        versionCode = 4
-        versionName = "1.0.3"
+        versionCode = 5
+        versionName = "1.0.4"
     }
 
     signingConfigs {
diff --git a/app/src/main/java/com/docmost/app/ui/PageEditorActivity.kt b/app/src/main/java/com/docmost/app/ui/PageEditorActivity.kt
index 50495dc..c38bf1c 100644
--- a/app/src/main/java/com/docmost/app/ui/PageEditorActivity.kt
+++ b/app/src/main/java/com/docmost/app/ui/PageEditorActivity.kt
@@ -1877,9 +1877,9 @@ class PageEditorActivity : AppCompatActivity() {
 
     private fun tiptapToMarkdown(tiptapJson: String): String {
         return try {
-            val doc = gson.fromJson(tiptapJson, com.google.gson.JsonObject::class.java).asMap()
-            @Suppress("UNCHECKED_CAST")
-            extractText(doc as Map<String, Any?>)
+            val type = object : com.google.gson.reflect.TypeToken<Map<String, Any?>>() {}.type
+            val doc: Map<String, Any?> = gson.fromJson(tiptapJson, type)
+            extractText(doc)
         } catch (e: Exception) {
             tiptapJson
         }
@@ -2492,6 +2492,15 @@ class PageEditorActivity : AppCompatActivity() {
                 content
             }
         }
+        if (content is Map<*, *>) {
+            @Suppress("UNCHECKED_CAST")
+            return try {
+                extractText(content as Map<String, Any?>)
+            } catch (e: Exception) {
+                android.util.Log.e("PageEditor", "contentToMarkdown map error: ${e.message}")
+                ""
+            }
+        }
         return try {
             val json = gson.toJson(content)
             if (json.isNotEmpty() && json != "null") {