diff --git a/meshchatx/meshchat.py b/meshchatx/meshchat.py
index 2c6b1f6..ec1122f 100644
--- a/meshchatx/meshchat.py
+++ b/meshchatx/meshchat.py
@@ -14080,6 +14080,10 @@ class ReticulumMeshChat:
             destination_hash_hex = download_data.get("destination_hash")
             file_path = download_data.get("file_path")
             request_data = download_data.get("data")
+            if isinstance(request_data, str):
+                request_data = convert_nomadnet_string_data_to_map(request_data)
+            elif request_data is None:
+                request_data = {}
 
             if not destination_hash_hex or not file_path:
                 return
@@ -15506,7 +15510,9 @@ class ReticulumMeshChat:
         except Exception as e:
             print(f"_lxmf_reticulum_enforce_block: failed: {e}")
 
-    def _delete_contact_and_stamp_ticket(self, destination_hash: str, context=None) -> None:
+    def _delete_contact_and_stamp_ticket(
+        self, destination_hash: str, context=None
+    ) -> None:
         """Remove contact and stamp/ticket state for a blocked destination."""
         ctx = context or self.current_context
         if not ctx or not ctx.database:
diff --git a/meshchatx/src/backend/nomadnet_downloader.py b/meshchatx/src/backend/nomadnet_downloader.py
index bd5e5ff..8b9ff6d 100644
--- a/meshchatx/src/backend/nomadnet_downloader.py
+++ b/meshchatx/src/backend/nomadnet_downloader.py
@@ -107,7 +107,22 @@ class NomadnetDownloader:
 
         if self.request_receipt is not None:
             try:
-                self.request_receipt.cancel()
+                if (
+                    hasattr(self.request_receipt, "resource")
+                    and self.request_receipt.resource is not None
+                ):
+                    self.request_receipt.resource.cancel()
+                else:
+                    self.request_receipt.status = RNS.RequestReceipt.FAILED
+                    if (
+                        hasattr(self.request_receipt, "link")
+                        and self.request_receipt.link is not None
+                        and self.request_receipt
+                        in self.request_receipt.link.pending_requests
+                    ):
+                        self.request_receipt.link.pending_requests.remove(
+                            self.request_receipt
+                        )
             except Exception as e:
                 print(f"Failed to cancel request: {e}")