diff --git a/admin/themes/default/css/default.css b/admin/themes/default/css/default.css
index 378232e9..7ab788c0 100644
--- a/admin/themes/default/css/default.css
+++ b/admin/themes/default/css/default.css
@@ -103,6 +103,7 @@ button.delete-button:hover {
 	height: 400px;
 }
 
+
 /* ----------- ALERT ----------- */
 
 #alert {
diff --git a/admin/themes/default/init.php b/admin/themes/default/init.php
index 58f1cce4..1f3db143 100644
--- a/admin/themes/default/init.php
+++ b/admin/themes/default/init.php
@@ -159,6 +159,9 @@ class HTML {
 
 			$("#jsaddImage").on("click", function() {
 				var filename = $("#jsimageList option:selected").text();
+				if(!filename.trim()) {
+					return false;
+				}
 				var textareaValue = $("#jscontent").val();
 				$("#jscontent").val(textareaValue + "<img src=\""+filename+"\" alt=\"\">" + "\n");
 			});
@@ -187,6 +190,10 @@ class HTML {
 						bar.css("width", "100%").text("100%");
 						setTimeout(function() { progressbar.addClass("uk-hidden"); }, 250);
 						$("#jsimageList").prepend("<option value=\'"+response.filename+"\' selected=\'selected\'>"+response.filename+"</option>");
+					},
+
+					notallowed: function(file, settings) {
+						alert("'.$L->g('Supported image file types').' "+settings.allow);
 					}
 				};
 
diff --git a/install.php b/install.php
index 7da52d20..f2bc046d 100644
--- a/install.php
+++ b/install.php
@@ -7,6 +7,11 @@
  * Bludit is opensource software licensed under the MIT license.
 */
 
+// Check PHP version
+if(version_compare(phpversion(), '5.3', '<')) {
+	exit('Current PHP version '.phpversion().', you need > 5.3. (ERR_202)');
+}
+
 // Security constant
 define('BLUDIT', true);
 
@@ -139,19 +144,6 @@ function checkSystem()
 		$phpModules = get_loaded_extensions();
 	}
 
-	// If the php version is less than 5.3, then don't check others requirements.
-	if(!version_compare(phpversion(), '5.3', '>='))
-	{
-		$errorText = 'Current PHP version '.phpversion().', you need > 5.3. (ERR_202)';
-		error_log($errorText, 0);
-
-		$tmp['title'] = 'PHP version';
-		$tmp['errorText'] = $errorText;
-		array_push($stdOut, $tmp);
-
-		return $stdOut;
-	}
-
 	if(!file_exists(PATH_ROOT.'.htaccess'))
 	{
 		$errorText = 'Missing file, upload the file .htaccess (ERR_201)';
@@ -202,9 +194,8 @@ function install($adminPassword, $email, $timezoneOffset)
 
 	$stdOut = array();
 
-	$timezone = timezone_name_from_abbr('', $timezoneOffset, 1);
+	$timezone = timezone_name_from_abbr('', $timezoneOffset, 0);
 	if($timezone === false) { $timezone = timezone_name_from_abbr('', $timezoneOffset, 0); } // Workaround bug #44780
-
 	date_default_timezone_set($timezone);
 
 	$currentDate = Date::current(DB_DATE_FORMAT);
diff --git a/languages/en_US.json b/languages/en_US.json
index 405f1f45..e308c6f4 100644
--- a/languages/en_US.json
+++ b/languages/en_US.json
@@ -203,5 +203,6 @@
 	"images": "Images",
 	"upload-image": "Upload image",
 	"drag-and-drop-or-click-here": "Drag and drop or click here",
-	"insert-image": "Insert image"
+	"insert-image": "Insert image",
+	"supported-image-file-types": "Supported image file types"
 }
\ No newline at end of file
diff --git a/plugins/simplemde/plugin.php b/plugins/simplemde/plugin.php
index 78be158e..f362c0a7 100644
--- a/plugins/simplemde/plugin.php
+++ b/plugins/simplemde/plugin.php
@@ -97,6 +97,9 @@ class pluginsimpleMDE extends Plugin {
 
 			$html .= '$("#jsaddImage").on("click", function() {
 					var filename = $("#jsimageList option:selected" ).text();
+					if(!filename.trim()) {
+						return false;
+					}
 					var text = simplemde.value();
 					simplemde.value(text + "![alt text]("+filename+")" + "\n");
 			});';