diff --git a/weboob/backends/cragr/pages/accounts_list.py b/weboob/backends/cragr/pages/accounts_list.py
index 99fca92f29aba13011a518155c4e177c6031bc4c..b789a46155035db1b2b46adf5340afcdfc96c884 100644
--- a/weboob/backends/cragr/pages/accounts_list.py
+++ b/weboob/backends/cragr/pages/accounts_list.py
@@ -20,9 +20,6 @@
 from .base import CragrBasePage
 
 class AccountsList(CragrBasePage):
-    def on_loaded(self):
-        pass
-
     def get_list(self):
         l = []
 
diff --git a/weboob/backends/cragr/pages/base.py b/weboob/backends/cragr/pages/base.py
index ee3248bc62a02ac74b05d93e149a941991c32a0b..55a441a079d65365efd2c9a383941d96ad036b32 100644
--- a/weboob/backends/cragr/pages/base.py
+++ b/weboob/backends/cragr/pages/base.py
@@ -17,8 +17,23 @@
 
 
 from weboob.tools.browser import BasePage
+from weboob.tools.browser import BrowserUnavailable
 
 class CragrBasePage(BasePage):
+    def on_loaded(self):
+        # Check for an error
+        for div in self.document.getiterator('div'):
+            if div.attrib.get('class', '') == 'dv' and div.getchildren()[0].tag in ('img') and div.getchildren()[0].attrib.get('alt', '') == 'Attention':
+                # Try to find a detailed error message
+                if div.getchildren()[1].tag == 'span':
+                    raise BrowserUnavailable(div.find('span').find('b').text)
+                elif div.getchildren()[1].tag == 'b':
+                    # I haven't encountered this variation in the wild,
+                    # but I wouldn't be surprised if it existed
+                    # given the similar differences between regions.
+                    raise BrowserUnavailable(div.find('b').find('span').text)
+                raise BrowserUnavailable()
+
     def is_logged(self):
         for form in self.document.getiterator('form'):
             return False
diff --git a/weboob/backends/cragr/pages/login.py b/weboob/backends/cragr/pages/login.py
index 9a7e1db6a68bde9ca778f03c9e2c211876f4a17d..1a6e88621d4d68c94ff73995b0e91ca8398162c1 100644
--- a/weboob/backends/cragr/pages/login.py
+++ b/weboob/backends/cragr/pages/login.py
@@ -26,9 +26,6 @@
 
 
 class LoginPage(CragrBasePage):
-    def on_loaded(self):
-        pass
-
     def login(self, login, password):
         self.browser.select_form(nr=0)
         try: