diff --git a/mc_backend/mcserver/app/assets/latin-ittb-ud-2.0-conll17-170315.udpipe b/mc_backend/mcserver/app/assets/latin-proiel-ud-2.5-191206.udpipe
similarity index 59%
rename from mc_backend/mcserver/app/assets/latin-ittb-ud-2.0-conll17-170315.udpipe
rename to mc_backend/mcserver/app/assets/latin-proiel-ud-2.5-191206.udpipe
index 15ac1a4f56c4aa34b1dccb6e6ea934838de637ff..9fc7042520f5e13f67a74dd66cee37799c2c0d02 100644
Binary files a/mc_backend/mcserver/app/assets/latin-ittb-ud-2.0-conll17-170315.udpipe and b/mc_backend/mcserver/app/assets/latin-proiel-ud-2.5-191206.udpipe differ
diff --git a/mc_backend/mcserver/config.py b/mc_backend/mcserver/config.py
index 0a5267055b295b6c66d957302f893d79d15a56c4..e4e1b0b2c296c3e749c8520ff2ca2638297ad417 100644
--- a/mc_backend/mcserver/config.py
+++ b/mc_backend/mcserver/config.py
@@ -155,7 +155,7 @@ class Config(object):
     TESTING = False
     TRAP_HTTP_EXCEPTIONS = True
     TREEBANKS_CACHE_DIRECTORY = os.path.join(CACHE_DIRECTORY, "treebanks")
-    UDPIPE_MODEL_PATH = os.path.join(ASSETS_DIRECTORY, "latin-ittb-ud-2.0-conll17-170315.udpipe")
+    UDPIPE_MODEL_PATH = os.path.join(ASSETS_DIRECTORY, "latin-proiel-ud-2.5-191206.udpipe")
     UDPIPE_PATH_LINUX = os.path.join(ASSETS_DIRECTORY, "udpipe_linux64")
     UDPIPE_PATH_OSX = os.path.join(ASSETS_DIRECTORY, "udpipe_osx")
     UDPIPE_PATH_WIN64 = os.path.join(ASSETS_DIRECTORY, "udpipe_win64.exe")
diff --git a/mc_frontend/src/app/author/author.page.html b/mc_frontend/src/app/author/author.page.html
index 7540ad5b3607f83ce691057b5e5184159d782f09..562a6516186841a8cf840a7b49387430c78220df 100644
--- a/mc_frontend/src/app/author/author.page.html
+++ b/mc_frontend/src/app/author/author.page.html
@@ -70,7 +70,7 @@
                     </ion-row>
                 </ion-grid>
                 <ng-template #loading>
-                    <ion-spinner></ion-spinner>
+                    <div>{{'AUTHORS_NOT_FOUND' | translate}}</div>
                 </ng-template>
             </ion-col>
         </ion-row>
diff --git a/mc_frontend/src/app/corpus.service.ts b/mc_frontend/src/app/corpus.service.ts
index 114aaf10686341a9090cc3af99e318605e116799..eef1f516c364676b180de14e6770ae9bb8d9ce34 100644
--- a/mc_frontend/src/app/corpus.service.ts
+++ b/mc_frontend/src/app/corpus.service.ts
@@ -377,8 +377,8 @@ export class CorpusService {
                     return resolve();
                 }
                 const ui: UpdateInfo = new UpdateInfo({
-                    corpora: new Date().getTime(),
-                    exerciseList: new Date().getTime()
+                    corpora: 1,
+                    exerciseList: 1
                 });
                 this.storage.set(configMC.localStorageKeyUpdateInfo, JSON.stringify(ui)).then(() => {
                     return resolve();
diff --git a/mc_frontend/src/assets/i18n/de.json b/mc_frontend/src/assets/i18n/de.json
index b59552ceb70970466b6935cde2bcdc8c27faad7a..455bcd613e4a471524ca127b7ed2fed2ef3841c6 100644
--- a/mc_frontend/src/assets/i18n/de.json
+++ b/mc_frontend/src/assets/i18n/de.json
@@ -5,6 +5,7 @@
   "AUTHOR_SEARCH": "Autor suchen...",
   "AUTHOR_SELECT": "Autor auswählen",
   "AUTHOR_SHOW_ONLY_TREEBANKS": "Nur aufbereitete Texte (Haken entfernen für alle Autoren)",
+  "AUTHORS_NOT_FOUND": "Keine Autoren gefunden",
   "BACK": "zurück",
   "BROWSE": "Durchsuchen...",
   "BUTTON_CONTINUE": "Nächste Aufgabe",
diff --git a/mc_frontend/src/assets/i18n/en.json b/mc_frontend/src/assets/i18n/en.json
index 312811e660e9b13bc95911db75d3dc01a0e9c643..925c289cab41e1fff290622d523975b834b4b0c8 100644
--- a/mc_frontend/src/assets/i18n/en.json
+++ b/mc_frontend/src/assets/i18n/en.json
@@ -5,6 +5,7 @@
   "AUTHOR_SEARCH": "Search author...",
   "AUTHOR_SELECT": "Select author",
   "AUTHOR_SHOW_ONLY_TREEBANKS": "High-quality texts only (uncheck for all authors)",
+  "AUTHORS_NOT_FOUND": "No authors found",
   "BACK": "back",
   "BROWSE": "Search...",
   "BUTTON_CONTINUE": "Next exercise",