diff --git a/ng-app/index-web.html b/ng-app/index-web.html
index 90b86b4..0e12db6 100644
--- a/ng-app/index-web.html
+++ b/ng-app/index-web.html
@@ -87,7 +87,7 @@
         </svg>
         <br/>
         <div id="error-no-wasm" class="error-no-wasm-hidden" style="text-align: center;">
-          Your browser is too old and does not support NextGraph. <br/>Please upgrade to a newer version of this browser,<br/> try with another browser, <br/>or <a href="https://nextgraph.org/install">install our native app</a>.
+          Your browser is too old and does not support NextGraph. <br/>Please upgrade to a newer version of this browser,<br/> try with another browser, <br/>or <a href="https://nextgraph.org/download">install our native app</a>.
         </div>
         <noscript style="text-align: center;">
           NextGraph cannot load as Javascript is deactivated
diff --git a/ng-app/src/apps/SparqlQueryEditor.svelte b/ng-app/src/apps/SparqlQueryEditor.svelte
index b93d870..a835018 100644
--- a/ng-app/src/apps/SparqlQueryEditor.svelte
+++ b/ng-app/src/apps/SparqlQueryEditor.svelte
@@ -15,7 +15,8 @@
       sparql_query,
       toast_error,
       toast_success,
-      reset_toasts
+      reset_toasts,
+      display_error,
     } from "../store";
     import { 
       in_memory_discrete, open_viewer, set_viewer, reset_in_memory
@@ -54,7 +55,7 @@
         reset_toasts();
         results = await sparql_query($in_memory_discrete, union);
       } catch(e) {
-        toast_error(e);
+        toast_error(display_error(e));
       }
     }
     const openTurtle = () => {
@@ -92,9 +93,13 @@
       <div>
         <span class="ml-2 font-bold">Results: <br/></span>
         {#if Array.isArray(results)}
-          <Highlight {language} code={results.join(" .\r\n") + " ."} class="mb-10"  let:highlighted >
-            <LineNumbers {highlighted} wrapLines hideBorder />
-          </Highlight>
+          {#if results.length}
+            <Highlight {language} code={results.join(" .\r\n") + (results.length ? " .":"")} class="mb-10"  let:highlighted >
+              <LineNumbers {highlighted} wrapLines hideBorder />
+            </Highlight>
+          {:else}
+            Empty
+          {/if}
         {:else if results?.head} 
           <Table>
             <TableHead>
diff --git a/ng-app/src/apps/SparqlUpdateEditor.svelte b/ng-app/src/apps/SparqlUpdateEditor.svelte
index 9954f36..9bf78fb 100644
--- a/ng-app/src/apps/SparqlUpdateEditor.svelte
+++ b/ng-app/src/apps/SparqlUpdateEditor.svelte
@@ -16,6 +16,7 @@
       toast_error,
       toast_success,
       reset_toasts,
+      display_error,
     } from "../store";
     import { 
       in_memory_discrete, open_viewer, reset_in_memory
@@ -41,7 +42,7 @@
         await sparql_update($in_memory_discrete);
         toast_success($t("app.sparql_update_editor.success"));
       } catch(e) {
-        toast_error(e);
+        toast_error(display_error(e));
       }
     }
     const openViewer = () => {
diff --git a/ng-app/src/apps/TurtleViewer.svelte b/ng-app/src/apps/TurtleViewer.svelte
index a3ab4ef..e926504 100644
--- a/ng-app/src/apps/TurtleViewer.svelte
+++ b/ng-app/src/apps/TurtleViewer.svelte
@@ -36,7 +36,7 @@
     
     export let commits = {graph:[]};
     let source = "";
-    $: source = commits.graph.join(" .\r\n") + " .";
+    $: source = commits.graph.join(" .\r\n") + (commits.graph.length ? " .":"");
 
     const openQuery = () => {
       set_viewer("n:g:z:sparql_query");
@@ -72,10 +72,11 @@
       </button>
     {/if}
 
-    <Highlight {language} code={source} class="mb-10"  let:highlighted >
-      <LineNumbers {highlighted} wrapLines hideBorder />
-    </Highlight>
-
+    {#if source}
+      <Highlight {language} code={source} class="mb-10"  let:highlighted >
+        <LineNumbers {highlighted} wrapLines hideBorder />
+      </Highlight>
+    {/if}
       
   </div>
   
\ No newline at end of file
diff --git a/ng-app/src/lib/panes/Files.svelte b/ng-app/src/lib/panes/Files.svelte
index 5df456b..14edc01 100644
--- a/ng-app/src/lib/panes/Files.svelte
+++ b/ng-app/src/lib/panes/Files.svelte
@@ -156,7 +156,6 @@
                         object: reference.V0.FileUploaded,
                     },
                 };
-
                 await ng.app_request_with_nuri_command(nuri, "FilePut", $active_session.session_id, file_put_payload);
             }
         });
@@ -167,6 +166,7 @@
 
 
 <div class="w-full">
+  {#if $cur_tab.doc.can_edit}
     <div class="row pt-2 w-full">
       
       <Button
@@ -187,51 +187,52 @@
         bind:this={fileinput}
       />
     </div>
-    {#if upload_progress !== null}
-      <div class="mx-6 mt-2">
-        <Progressbar
-          progress={(
-            (100 * upload_progress.current) /
-            upload_progress.total
-          ).toFixed(0)}
-          labelOutside={$t("doc.file.upload_progress")}
-        />
-      </div>
-    {/if}
-    {#if commits}
-      {#await commits.load()}
-        <p>{$t("connectivity.loading")}...</p>
-      {:then}
-        {#each $commits.files as file}
-          <p class="mb-5">
-
-            {#await get_blob(file, true)}
-              <div class="ml-2">
-                <Spinner />
-              </div>
-            {:then url}
-              {#await isImage(url) then is}
-                {#if is}
-                  <img src={url} title={file.nuri} alt={file.name} />
-                {/if}
-              {/await}
-              <span class="ml-2 text-gray-600">{file.name}<br/></span>
-              {#if url === false}
-                <span><ExclamationTriangle tabindex="-1" class="ml-2  w-6 h-8 focus:outline-none" style="display:inline"/>{$t("errors.cannot_load_this_file")}</span>
-              {:else if prepare_url(file.nuri)}
-                <a bind:this={file_urls[file.nuri].click}
-                    href={file_urls[file.nuri].url || ""}
-                    target="_blank"
-                    download={file.name}
-                ></a>
-                <button class="ml-2 select-none p-1 pb-0 text-gray-600" style="box-shadow:none;" on:click={()=>download(file)}>
-                  <span><ArrowDownTray tabindex="-1" class="w-6 h-8 mr-3 focus:outline-none" style="display:inline"/>{$t("doc.file.download")}</span>
-                </button>
+  {/if}
+  {#if upload_progress !== null}
+    <div class="mx-6 mt-2">
+      <Progressbar
+        progress={(
+          (100 * upload_progress.current) /
+          upload_progress.total
+        ).toFixed(0)}
+        labelOutside={$t("doc.file.upload_progress")}
+      />
+    </div>
+  {/if}
+  {#if commits}
+    {#await commits.load()}
+      <p>{$t("connectivity.loading")}...</p>
+    {:then}
+      {#each $commits.files as file}
+        <p class="mb-5">
+
+          {#await get_blob(file, true)}
+            <div class="ml-2">
+              <Spinner />
+            </div>
+          {:then url}
+            {#await isImage(url) then is}
+              {#if is}
+                <img src={url} title={file.nuri} alt={file.name} />
               {/if}
             {/await}
-          </p>
-        {/each}
-      {/await}
-    {/if}
+            <span class="ml-2 text-gray-600">{file.name}<br/></span>
+            {#if url === false}
+              <span><ExclamationTriangle tabindex="-1" class="ml-2  w-6 h-8 focus:outline-none" style="display:inline"/>{$t("errors.cannot_load_this_file")}</span>
+            {:else if prepare_url(file.nuri)}
+              <a bind:this={file_urls[file.nuri].click}
+                  href={file_urls[file.nuri].url || ""}
+                  target="_blank"
+                  download={file.name}
+              ></a>
+              <button class="ml-2 select-none p-1 pb-0 pt-0 text-gray-600" style="box-shadow:none;" on:click={()=>download(file)}>
+                <span><ArrowDownTray tabindex="-1" class="w-6 h-8 mr-3 focus:outline-none" style="display:inline"/>{$t("doc.file.download")}</span>
+              </button>
+            {/if}
+          {/await}
+        </p>
+      {/each}
+    {/await}
+  {/if}
 
 </div>
\ No newline at end of file
diff --git a/ng-app/src/locales/en.json b/ng-app/src/locales/en.json
index 07b5791..c82ae57 100644
--- a/ng-app/src/locales/en.json
+++ b/ng-app/src/locales/en.json
@@ -551,7 +551,8 @@
     "NotARendezVous": "You scanned an invalid QR-Code.",
     "camera_unavailable": "Camera is unavailable.",
     "ServerAlreadyRunningInOtherProcess": "App is already running on this device. Check it and close it.",
-    "cannot_load_this_file": "Cannot load this file"
+    "cannot_load_this_file": "Cannot load this file",
+    "graph_not_found": "Graph not found"
   },
   "connectivity": {
     "stopped": "Stopped",
diff --git a/ng-app/src/store.ts b/ng-app/src/store.ts
index 3cb9038..5089f4e 100644
--- a/ng-app/src/store.ts
+++ b/ng-app/src/store.ts
@@ -45,7 +45,7 @@ init({
 });
 
 export const display_error = (error: string) => {
-    console.log(error);
+    //console.log(error);
     // TODO: Check, if error tranlsation does not exist
     const parts = error.split(":");
     let res = get(format)("errors." + parts[0]);
diff --git a/ng-oxigraph/src/oxigraph/sparql/dataset.rs b/ng-oxigraph/src/oxigraph/sparql/dataset.rs
index 5987ff3..3551f5d 100644
--- a/ng-oxigraph/src/oxigraph/sparql/dataset.rs
+++ b/ng-oxigraph/src/oxigraph/sparql/dataset.rs
@@ -72,9 +72,9 @@ impl DatasetView {
     fn parse_graph_name(&self, graph_name: &EncodedTerm) -> Result<MatchBy, StorageError> {
         match graph_name {
             EncodedTerm::NamedNode { iri_id } => {
-                let graph_name_string = self.get_str(iri_id)?.ok_or::<StorageError>(
-                    CorruptionError::msg("graph_name not found in parse_graph_name").into(),
-                )?;
+                let graph_name_string = self
+                    .get_str(iri_id)?
+                    .ok_or::<StorageError>(CorruptionError::msg("graph_not_found").into())?;
                 self.reader
                     .parse_graph_name(&graph_name_string, Some(*iri_id))
             }
diff --git a/ng-sdk-js/src/lib.rs b/ng-sdk-js/src/lib.rs
index a28728c..9cd08b3 100644
--- a/ng-sdk-js/src/lib.rs
+++ b/ng-sdk-js/src/lib.rs
@@ -938,9 +938,9 @@ async fn app_request_stream_(
                         Ok(promise) => match JsFuture::from(promise).await {
                             Ok(js_value) => {
                                 if js_value == JsValue::TRUE {
-                                    log_debug!("cancel because true");
+                                    //log_debug!("cancel because true");
                                     reader.close();
-                                    canceller_tx.send(()).await;
+                                    let _ = canceller_tx.send(()).await;
                                     canceller_tx.close_channel();
                                     break;
                                 }
@@ -949,9 +949,9 @@ async fn app_request_stream_(
                         },
                         Err(returned_val) => {
                             if returned_val == JsValue::TRUE {
-                                log_debug!("cancel because true");
+                                //log_debug!("cancel because true");
                                 reader.close();
-                                canceller_tx.send(()).await;
+                                let _ = canceller_tx.send(()).await;
                                 canceller_tx.close_channel();
                                 break;
                             }
@@ -968,7 +968,7 @@ async fn app_request_stream_(
 
     async fn inner_canceller(mut canceller_rx: Receiver<()>, cancel: CancelFn) -> ResultSend<()> {
         if let Some(_) = canceller_rx.next().await {
-            log_info!("cancelling");
+            //log_info!("cancelling");
             cancel();
         }
         Ok(())
@@ -981,7 +981,7 @@ async fn app_request_stream_(
     let cb = Closure::once(move || {
         log_info!("trying to cancel");
         //sender.close_channel()
-        canceller_tx.unbounded_send(());
+        let _ = canceller_tx.unbounded_send(());
         canceller_tx.close_channel();
     });
     //Closure::wrap(Box::new(move |sender| sender.close_channel()) as Box<FnMut(Sender<Commit>)>);
diff --git a/ng-verifier/src/request_processor.rs b/ng-verifier/src/request_processor.rs
index d23eddc..14cba57 100644
--- a/ng-verifier/src/request_processor.rs
+++ b/ng-verifier/src/request_processor.rs
@@ -109,7 +109,7 @@ impl Verifier {
 
                     spawn_and_log_error(sending_loop(Arc::new(file), tx.clone()));
                     let fnonce = Box::new(move || {
-                        log_debug!("FileGet cancelled");
+                        //log_debug!("FileGet cancelled");
                         tx.close_channel();
                     });
                     Ok((rx, fnonce))