diff --git a/syncplay/client.py b/syncplay/client.py
index cae8de1c..2e7332dc 100755
--- a/syncplay/client.py
+++ b/syncplay/client.py
@@ -656,6 +656,10 @@ def openFile(self, filePath, resetPosition=False, fromUser=False):
             self.playlist.loadPlaylistFromFile(filePath, resetPosition)
             return
 
+        if self.playerIsNotReady():
+            self.ui.showErrorMessage(getMessage("player-not-ready-error"))
+            return
+
         self.playlist.openedFile()
         self._player.openFile(filePath, resetPosition)
         if resetPosition:
diff --git a/syncplay/messages_en.py b/syncplay/messages_en.py
index 347ddbae..39a79c7c 100644
--- a/syncplay/messages_en.py
+++ b/syncplay/messages_en.py
@@ -140,6 +140,7 @@
     "mpv-failed-advice": "The reason mpv cannot start may be due to the use of unsupported command line arguments or an unsupported version of mpv.",
     "player-file-open-error": "Player failed opening file",
     "player-path-error": "Player path is not set properly. Supported players are: mpv, mpv.net, VLC, MPC-HC, MPC-BE, mplayer2, and IINA",
+    "player-not-ready-error": "Media player is not ready yet. Please wait for it to finish starting up and try again.",
     "hostname-empty-error": "Hostname can't be empty",
     "empty-error": "{} can't be empty",  # Configuration
     "media-player-error": "Media player error: \"{}\"",  # Error line
diff --git a/syncplay/ui/gui.py b/syncplay/ui/gui.py
index 7bf86f34..85dbdac6 100755
--- a/syncplay/ui/gui.py
+++ b/syncplay/ui/gui.py
@@ -1251,6 +1251,9 @@ def getInitialMediaDirectory(self, includeUserSpecifiedDirectories=True):
 
     @needsClient
     def browseMediapath(self):
+        if self._syncplayClient.playerIsNotReady():
+            self.showErrorMessage(getMessage("player-not-ready-error"))
+            return
         if self._syncplayClient._player.customOpenDialog == True:
             self._syncplayClient._player.openCustomOpenDialog()
             return
@@ -1280,6 +1283,9 @@ def browseMediapath(self):
 
     @needsClient
     def OpenAddFilesToPlaylistDialog(self):
+        if self._syncplayClient.playerIsNotReady():
+            self.showErrorMessage(getMessage("player-not-ready-error"))
+            return
         if self._syncplayClient._player.customOpenDialog == True:
             self._syncplayClient._player.openCustomOpenDialog()
             return