diff --git a/html/js/mod_button_methods.js b/html/js/mod_button_methods.js
index 522e8bb5..b3302fc8 100644
--- a/html/js/mod_button_methods.js
+++ b/html/js/mod_button_methods.js
@@ -4,7 +4,7 @@ export default {
     },
 
     update() {
-        fs2mod.updateMod(this.mod.id, this.mod.versions[0].installed ? this.mod.versions[0].version : '');
+        fs2mod.updateMod(this.mod.id, '');
     },
 
     install() {
diff --git a/knossos/center.py b/knossos/center.py
index 249c4152..467305b0 100644
--- a/knossos/center.py
+++ b/knossos/center.py
@@ -24,7 +24,7 @@
 
 # The version should follow the http://semver.org guidelines.
 # Only remove the -dev tag if you're making a release!
-VERSION = '0.13.2'
+VERSION = '0.13.3'
 UPDATE_LINK = 'https://fsnebula.org/knossos'
 INNOEXTRACT_LINK = 'https://fsnebula.org/storage/knossos/innoextract.json'
 DEBUG = os.getenv('KN_DEBUG', '0').strip() == '1'
diff --git a/knossos/tasks.py b/knossos/tasks.py
index 57785503..bfcf8824 100644
--- a/knossos/tasks.py
+++ b/knossos/tasks.py
@@ -892,7 +892,7 @@ def work(self, dummy):
             for i, name in enumerate(items):
                 progress.update(i / count, 'Deleting files...')
 
-                os.unlink(name)
+                util.safe_unlink(name)
 
             # Delete the remaining empty directories and other stuff
             shutil.rmtree(path)
@@ -1561,6 +1561,7 @@ def __init__(self, gog_path, dest_path):
             self.abort()
             return
 
+        create_retail_mod(self._dest_path)
         self.mods = [center.installed.query('FS2')]
         self._slot_prog = {
             'total': ('Status', 0, 'Waiting...')
@@ -1744,15 +1745,20 @@ def finish(self):
                       'selected data path or contact ngld for more information.'
 
             QtWidgets.QMessageBox.critical(None, translate('tasks', 'Error'), msg)
-            return
         elif results[0] == -1:
             QtWidgets.QMessageBox.critical(None, translate('tasks', 'Error'), self.tr(
                 'The selected file wasn\'t a proper Inno Setup installer. Are you shure you selected the right file?'))
-            return
         else:
-            create_retail_mod(self._dest_path)
             center.main_win.update_mod_list()
             center.main_win.browser_ctrl.bridge.retailInstalled.emit()
+            return
+
+        path = os.path.join(self._dest_path, 'mod.json')
+        if os.path.isfile(path):
+            os.unlink(path)
+
+        if center.installed.has('FS2'):
+            center.installed.del_mod(center.installed.query('FS2'))
 
 
 class GOGCopyTask(progress.Task):
@@ -1769,6 +1775,7 @@ def __init__(self, gog_path, dest_path):
 
         self._makedirs(dest_path)
 
+        create_retail_mod(self._dest_path)
         self.mods = [center.installed.query('FS2')]
         self._slot_prog = {
             'total': ('Status', 0, 'Waiting...')
@@ -1819,7 +1826,6 @@ def _makedirs(self, path):
 
     def finish(self):
         if self._reason == 'done':
-            create_retail_mod(self._dest_path)
             center.main_win.update_mod_list()
             center.main_win.browser_ctrl.bridge.retailInstalled.emit()
             return
@@ -1828,6 +1834,13 @@ def finish(self):
         else:
             msg = 'Copying the retail files failed. Please make sure Knossos can write to the data path.'
 
+        path = os.path.join(self._dest_path, 'mod.json')
+        if os.path.isfile(path):
+            os.unlink(path)
+
+        if center.installed.has('FS2'):
+            center.installed.del_mod(center.installed.query('FS2'))
+
         QtWidgets.QMessageBox.critical(None, 'Error', msg)
 
 
@@ -2116,7 +2129,11 @@ def work(self, mod):
                     self._engine_cache[dep['id']] = is_engine
 
                 if is_engine:
-                    spec = util.Spec(dep['version'])
+                    if dep['version']:
+                        spec = util.Spec(dep['version'])
+                    else:
+                        spec = util.Spec('*')
+
                     engine_id = dep['id']
                     break
 
diff --git a/knossos/web.py b/knossos/web.py
index 99dc1285..db6fb242 100644
--- a/knossos/web.py
+++ b/knossos/web.py
@@ -51,11 +51,11 @@ def sendMessage(self, msg):
                 if isinstance(v, QtCore.QJsonValue):
                     msg[k] = v.toVariant()
 
-            print('#-> ', json.dumps(msg))
+            # print('#-> ', json.dumps(msg))
             self._conn.sendTextMessage(json.dumps(msg))
 
         def socketMessageReceived(self, msg):
-            print('#<- ', json.loads(msg))
+            # print('#<- ', json.loads(msg))
             self.messageReceived.emit(json.loads(msg), self)
 
         def socketDisconnected(self):
diff --git a/releng/ubuntu/debian/rules b/releng/ubuntu/debian/rules
index f9600585..c7a70504 100644
--- a/releng/ubuntu/debian/rules
+++ b/releng/ubuntu/debian/rules
@@ -8,7 +8,7 @@ export PYBUILD_INSTALL_DIR=/usr/share/knossos
 override_dh_link:
 	dh_link
 	echo '#!/bin/bash' > debian/knossos/usr/bin/knossos 
-	echo 'exec python3 /usr/share/knossos/knossos/__main__.py "$@"' >> debian/knossos/usr/bin/knossos 
+	echo 'exec python3 /usr/share/knossos/knossos/__main__.py "\$@"' >> debian/knossos/usr/bin/knossos 
 
 %:
 	dh $@ --with python3 --buildsystem=pybuild