diff --git a/admin/static/js/app.js b/admin/static/js/app.js
index bcdcedcd..b2c7db55 100644
--- a/admin/static/js/app.js
+++ b/admin/static/js/app.js
@@ -362,10 +362,10 @@ angular.module("FICApp")
 	}
 	$scope.reset = function(type) {
 	    if (confirm("Êtes-vous sûr ?")) {
-		$http.post("/api/reset", {"type": type}).success(function(time) {
+		$http.post("/api/reset", {"type": type}).then(function(time) {
 		    $rootScope.newBox('success', type + 'reseted');
 		    $location.url("/");
-		}).error(function(repsonse) {
+		}, function(response) {
 		    $rootScope.newBox('danger', 'An error occurs when reseting ' + type + ':', response.data);
 		});
 	    }
@@ -910,7 +910,7 @@ angular.module("FICApp")
 	    }
 	}
 
-	$http.get("/time.json").success(function(time) {
+	$http.get("/time.json").then(function(time) {
 	    time.he = (new Date()).getTime();
 	    sessionStorage.userService = angular.toJson(time);
 	    updTime();
diff --git a/frontend/static/js/challenge.js b/frontend/static/js/challenge.js
index 3568bb75..ef680c54 100644
--- a/frontend/static/js/challenge.js
+++ b/frontend/static/js/challenge.js
@@ -39,6 +39,8 @@ angular.module("FICApp", ["ngRoute", "ngSanitize"])
 	$rootScope.current_exercice = 0;
 	$rootScope.time = {};
 
+	$('[data-toggle="popover"]').popover();
+
 	function updTime() {
 	    if (sessionStorage.userService) {
 		var time = angular.fromJson(sessionStorage.userService);
@@ -78,7 +80,7 @@ angular.module("FICApp", ["ngRoute", "ngSanitize"])
 		angular.forEach($scope.themes, function(theme, key) {
 		    $scope.themes[key].exercice_solved = 0;
 		    angular.forEach(theme.exercices, function(exercice, k) {
-			if ($scope.my.exercices[k] && $scope.my.exercices[k].solved) {
+			if ($scope.my.exercices && $scope.my.exercices[k] && $scope.my.exercices[k].solved) {
 			    $scope.themes[key].exercice_solved++;
 			}
 		    });
@@ -89,18 +91,19 @@ angular.module("FICApp", ["ngRoute", "ngSanitize"])
 	    if (!justMy) {
 		$timeout.cancel($scope.cbr);
 		$scope.cbr = $timeout($rootScope.refresh, 42000);
-		$http.get("/time.json").success(function(time) {
+		$http.get("/time.json").then(function(response) {
+		    var time = response.data;
 		    time.he = (new Date()).getTime();
 		    sessionStorage.userService = angular.toJson(time);
 		});
-		$http.get("/settings.json").success(function(settings) {
-		    $scope.settings = settings;
+		$http.get("/settings.json").then(function(response) {
+		    $scope.settings = response.data;
 		});
-		$http.get("/themes.json").success(function(themes) {
-		    $scope.themes = themes;
+		$http.get("/themes.json").then(function(response) {
+		    $scope.themes = response.data;
 		    $scope.max_gain = 0;
 		    $scope.max_solved = 0;
-		    angular.forEach(themes, function(theme, key) {
+		    angular.forEach(response.data, function(theme, key) {
 			this[key].exercice_count = Object.keys(theme.exercices).length;
 			this[key].exercice_coeff_max = 0;
 			this[key].gain = 0;
@@ -112,10 +115,11 @@ angular.module("FICApp", ["ngRoute", "ngSanitize"])
 			}, theme);
 			$scope.max_gain += theme.gain;
 			$scope.max_solved = Math.max($scope.max_solved, theme.solved);
-		    }, themes);
+		    }, response.data);
 		    actMenu();
 		});
-		$http.get("/teams.json").success(function(teams) {
+		$http.get("/teams.json").then(function(response) {
+		    var teams = response.data;
 		    $scope.teams_count = Object.keys(teams).length
 		    $scope.teams = teams;
 
@@ -126,8 +130,8 @@ angular.module("FICApp", ["ngRoute", "ngSanitize"])
 		    }, $scope.rank);
 		});
 	    }
-	    $http.get("/my.json").success(function(my) {
-		$scope.my = my;
+	    $http.get("/my.json").then(function(response) {
+		$scope.my = response.data;
 		angular.forEach($scope.my.exercices, function(exercice, eid) {
 		    exercice.solved = exercice.solved_rank > 0;
 		    if (exercice.video_uri) {
@@ -135,7 +139,7 @@ angular.module("FICApp", ["ngRoute", "ngSanitize"])
 		    }
 		});
 		actMenu();
-		if (my.team_id == 0) {
+		if ($scope.my.team_id == 0) {
 		    angular.forEach($scope.my.exercices, function(exercice, eid) {
 			angular.forEach(exercice.hints, function(hint, hid) {
 			    $scope.my.exercices[eid].hints[hid].hidden = true;
@@ -157,7 +161,7 @@ angular.module("FICApp", ["ngRoute", "ngSanitize"])
 		var exos = Object.keys($scope.themes[$scope.current_theme].exercices);
 		var i = 0;
 		for (; i < exos.length; i++) {
-		    if (!$scope.my.exercices[exos[i]] || !$scope.my.exercices[exos[i]].solved)
+		    if (!$scope.my.exercices || !$scope.my.exercices[exos[i]] || !$scope.my.exercices[exos[i]].solved)
 			break;
 		}
 		if (i < exos.length) {
@@ -172,9 +176,10 @@ angular.module("FICApp", ["ngRoute", "ngSanitize"])
 
 	$scope.hsubmit = function(hint) {
 	    hint.submitted = true;
-	    $http({ url: "/openhint/" + $rootScope.current_exercice, method: "POST", data: { id: hint.id } }).success(function(data, status, header, config) {
+	    $http({ url: "/openhint/" + $rootScope.current_exercice, method: "POST", data: { id: hint.id } }).then(function(response, status, header, config) {
 		var checkDiffHint = function() {
-		    $http.get("/my.json").success(function(my) {
+		    $http.get("/my.json").then(function(response) {
+			var my = response.data;
 			angular.forEach(my.exercices[$rootScope.current_exercice].hints, function(h,hid){
 			    if (hint.id == h.id) {
 				if (hint.content != h.content) {
@@ -188,9 +193,9 @@ angular.module("FICApp", ["ngRoute", "ngSanitize"])
 		    });
 		};
 		checkDiffHint();
-	    }).error(function(data, status, header, config) {
+	    }, function(response, status, header, config) {
 		hint.submitted = false;
-		console.error(data.errmsg);
+		console.error(response.data.errmsg);
 	    });
 	};
     })
@@ -225,9 +230,9 @@ angular.module("FICApp", ["ngRoute", "ngSanitize"])
 		flgs[flag.name] = flag.value;
 	    });
 
-	    $http({ url: "/submit/" + $rootScope.current_exercice, method: "POST", data: flgs }).success(function(data, status, header, config) {
+	    $http({ url: "/submit/" + $rootScope.current_exercice, method: "POST", data: flgs }).then(function(response, status, header, config) {
 		$rootScope.messageClass = {"text-success": true};
-		$rootScope.message = data.errmsg;
+		$rootScope.message = response.data.errmsg;
 		$rootScope.sberr = "";
 
 		angular.forEach($scope.flags, function(flag,kid) {
@@ -235,7 +240,8 @@ angular.module("FICApp", ["ngRoute", "ngSanitize"])
 		});
 
 		var checkDiff = function() {
-		    $http.get("/my.json").success(function(my) {
+		    $http.get("/my.json").then(function(response) {
+			var my = response.data;
 			if ($scope.my.exercices[$rootScope.current_exercice].solved_time != my.exercices[$rootScope.current_exercice].solved_time) {
 			    $rootScope.refresh();
 			    $scope.my = my;
@@ -247,12 +253,12 @@ angular.module("FICApp", ["ngRoute", "ngSanitize"])
 		    });
 		};
 		checkDiff();
-	    }).error(function(data, status, header, config) {
+	    }, function(response, status, header, config) {
 		if (status >= 500) {
 		    $scope.my.exercices[$rootScope.current_exercice].submitted = false;
 		}
 		$rootScope.messageClass = {"text-danger": true};
-		$rootScope.message = data.errmsg;
+		$rootScope.message = response.data.errmsg;
 		if (status != 402) {
 		    $rootScope.sberr = "Une erreur est survenue lors de l'envoi. Veuillez réessayer dans quelques instants.";
 		}
@@ -295,14 +301,13 @@ angular.module("FICApp", ["ngRoute", "ngSanitize"])
 		url: "/submit/name",
 		method: "POST",
 		data: {newName: $scope.newName}
-	    }).success(function(data, status, header, config) {
+	    }).success(function(response, status, header, config) {
 		$rootScope.messageClass = {"text-success": true};
-		$rootScope.message = data.errmsg;
+		$rootScope.message = response.data.errmsg;
 
 		var checkDiff = function() {
-		    $http.get("/my.json").success(function(my) {
-			console.log(my.name);
-			if ($scope.my.name != my.name) {
+		    $http.get("/my.json").then(function(response) {
+			if ($scope.my.name != response.data.name) {
 			    $scope.newName = "";
 			    $rootScope.message = "";
 			    $rootScope.refresh();
@@ -313,9 +318,9 @@ angular.module("FICApp", ["ngRoute", "ngSanitize"])
 		    });
 		};
 		checkDiff();
-	    }).error(function(data, status, header, config) {
+	    }, function(response, status, header, config) {
 		$rootScope.messageClass = {"text-danger": true};
-		$rootScope.message = data.errmsg;
+		$rootScope.message = response.data.errmsg;
 		if (status != 402) {
 		    $rootScope.sberr = "Une erreur est survenue lors de l'envoi. Veuillez réessayer dans quelques instants.";
 		}
diff --git a/frontend/static/js/public.js b/frontend/static/js/public.js
index e2fb1df3..c9e2bff8 100644
--- a/frontend/static/js/public.js
+++ b/frontend/static/js/public.js
@@ -15,7 +15,8 @@ angular.module("FICApp")
 	var initTime = function() {
 	    $timeout.cancel($scope.cbi);
 	    $scope.cbi = $timeout(initTime, 10000);
-	    $http.get("/time.json").success(function(time) {
+	    $http.get("/time.json").then(function(response) {
+		var time = response.data;
 		console.log("upd time");
 		time.he = (new Date()).getTime();
 		sessionStorage.userService = angular.toJson(time);
@@ -126,11 +127,11 @@ angular.module("FICApp")
 
 		$scope.my = response.data;
 	    });
-	    $http.get("/stats.json").success(function(stats) {
-		$scope.stats = stats;
+	    $http.get("/stats.json").then(function(response) {
+		$scope.stats = response.data;
 	    });
-	    $http.get("/settings.json").success(function(settings) {
-		$scope.settings = settings;
+	    $http.get("/settings.json").then(function(response) {
+		$scope.settings = response.data;
 	    });
 	    $http.get("/themes.json").then(function(response) {
 		if ($scope.lastthemeetag == response.headers().etag)
@@ -175,7 +176,7 @@ angular.module("FICApp")
     })
     .controller("TeamController", function($scope, $http, $interval) {
 	$scope.mystats = null;
-	$http.get("/api/teams/" + $scope.team.id + "/stats.json").success(function(mstats) {
-	    $scope.mystats = mstats;
+	$http.get("/api/teams/" + $scope.team.id + "/stats.json").then(function(response) {
+	    $scope.mystats = response.data;
 	});
     });