diff --git a/include/plugin.php b/include/plugin.php
index 4da73dfd8..ccd88d963 100755
--- a/include/plugin.php
+++ b/include/plugin.php
@@ -348,19 +348,46 @@ function get_plugin_info($plugin){
 					} else {
 						$info[$k][] = array('name' => $v);
 					}
-				} else {
-//					if (array_key_exists($k, $info)){
-						$info[$k] = $v;
-//					}
+				} 
+				else {
+					$info[$k] = $v;
 				}
 			}
 		}
 	}
 
-
 	return $info;
 }
 
+function check_plugin_versions($info) {
+
+	if(! is_array($info))
+		return true;
+
+	if(array_key_exists('minversion',$info)) {
+		if(version_compare(trim($info['minversion']),STD_VERSION, '<')) {
+			logger('minversion limit: ' . $info['name'],LOGGER_NORMAL,LOG_WARNING);
+			return false;
+		}
+	}
+	if(array_key_exists('maxversion',$info)) {
+		if(version_compare(trim($info['maxversion']),STD_VERSION, '>')) {
+			logger('maxversion limit: ' . $info['name'],LOGGER_NORMAL,LOG_WARNING);
+			return false;
+		}
+	}
+	if(array_key_exists('minphpversion',$info)) {
+		if(version_compare(trim($info['minphpversion']),PHP_VERSION, '<')) {
+			logger('minphpversion limit: ' . $info['name'],LOGGER_NORMAL,LOG_WARNING);
+			return false;
+		}
+	}
+
+	return true;
+}
+
+
+
 
 /**
  * @brief Parse theme comment in search of theme infos.
diff --git a/mod/admin.php b/mod/admin.php
index c175a4a61..2d859399b 100644
--- a/mod/admin.php
+++ b/mod/admin.php
@@ -1092,6 +1092,23 @@ function admin_page_plugins(&$a){
 			return '';
 		}
 
+		$enabled = in_array($plugin,$a->plugins);
+		$info = get_plugin_info($plugin);
+		$x = check_plugin_versions($info);
+
+		// disable plugins which are installed but incompatible versions
+
+		if($enabled && ! $x) {
+			$enabled = false;
+			$idz = array_search($plugin, $a->plugins);
+			if ($idz !== false) {
+				unset($a->plugins[$idz]);
+				uninstall_plugin($plugin);
+				set_config("system","addon", implode(", ",$a->plugins));
+			}
+		}
+		$info['disabled'] = 1-intval($x);
+
 		if (x($_GET,"a") && $_GET['a']=="t"){
 			check_form_security_token_redirectOnErr('/admin/plugins', 'admin_plugins', 't');
 
@@ -1142,6 +1159,7 @@ function admin_page_plugins(&$a){
 			}
 		}
 
+
 		$t = get_markup_template('admin_plugins_details.tpl');
 		return replace_macros($t, array(
 			'$title' => t('Administration'),
@@ -1153,9 +1171,14 @@ function admin_page_plugins(&$a){
 			'$plugin' => $plugin,
 			'$status' => $status,
 			'$action' => $action,
-			'$info' => get_plugin_info($plugin),
+			'$info' => $info,
 			'$str_author' => t('Author: '),
 			'$str_maintainer' => t('Maintainer: '),
+			'$str_minversion' => t('Minimum project version: '),
+			'$str_maxversion' => t('Maximum project version: '),
+			'$str_minphpversion' => t('Minimum PHP version: '),
+
+			'$disabled' => t('Disabled - version incompatibility'),
 
 			'$admin_form' => $admin_form,
 			'$function' => 'plugins',
@@ -1177,7 +1200,23 @@ function admin_page_plugins(&$a){
 			if (is_dir($file)){
 				list($tmp, $id) = array_map('trim', explode('/', $file));
 				$info = get_plugin_info($id);
-				$plugins[] = array( $id, (in_array($id,  $a->plugins)?"on":"off") , $info);
+				$enabled = in_array($id,$a->plugins);
+				$x = check_plugin_versions($info);
+
+				// disable plugins which are installed but incompatible versions
+
+				if($enabled && ! $x) {
+					$enabled = false;
+					$idz = array_search($id, $a->plugins);
+					if ($idz !== false) {
+						unset($a->plugins[$idz]);
+						uninstall_plugin($id);
+						set_config("system","addon", implode(", ",$a->plugins));
+					}
+				}
+				$info['disabled'] = 1-intval($x);
+
+				$plugins[] = array( $id, (($enabled)?"on":"off") , $info);
 			}
 		}
 	}
@@ -1190,6 +1229,7 @@ function admin_page_plugins(&$a){
 		'$baseurl' => $a->get_baseurl(true),
 		'$function' => 'plugins',
 		'$plugins' => $plugins,
+		'$disabled' => t('Disabled - version incompatibility'),
 		'$form_security_token' => get_form_security_token('admin_plugins'),
 	));
 }
diff --git a/version.inc b/version.inc
index 3641bf5e9..c17fa0d99 100644
--- a/version.inc
+++ b/version.inc
@@ -1 +1 @@
-2016-01-10.1274H
+2016-01-11.1275H
diff --git a/view/tpl/admin_plugins.tpl b/view/tpl/admin_plugins.tpl
index 0f76cc4fe..0da214c17 100755
--- a/view/tpl/admin_plugins.tpl
+++ b/view/tpl/admin_plugins.tpl
@@ -4,8 +4,12 @@
 		<ul id='pluginslist'>
 		{{foreach $plugins as $p}}
 			<li class='plugin {{$p.1}}'>
+				{{if ! $p.2.disabled}}				
 				<a class='toggleplugin' href='{{$baseurl}}/admin/{{$function}}/{{$p.0}}?a=t&amp;t={{$form_security_token}}' title="{{if $p.1==on}}Disable{{else}}Enable{{/if}}" ><i class='{{if $p.1==on}}icon-check{{else}}icon-check-empty{{/if}} admin-icons'></i></a>
-				<a href='{{$baseurl}}/admin/{{$function}}/{{$p.0}}'><span class='name'>{{$p.2.name}}</span></a> - <span class="version">{{$p.2.version}}</span>
+				{{else}}
+				<i class='icon-stop admin-icons'></i>
+				{{/if}}
+				<a href='{{$baseurl}}/admin/{{$function}}/{{$p.0}}'><span class='name'>{{$p.2.name}}</span></a> - <span class="version">{{$p.2.version}}</span>{{if $p.2.disabled}} {{$disabled}}{{/if}}
 				{{if $p.2.experimental}} {{$experimental}} {{/if}}{{if $p.2.unsupported}} {{$unsupported}} {{/if}}
 
 					<div class='desc'>{{$p.2.description}}</div>
diff --git a/view/tpl/admin_plugins_details.tpl b/view/tpl/admin_plugins_details.tpl
index 6225ae7bf..721bd3573 100755
--- a/view/tpl/admin_plugins_details.tpl
+++ b/view/tpl/admin_plugins_details.tpl
@@ -1,7 +1,12 @@
 <div class = "generic-content-wrapper-styled" id='adminpage'>
 	<h1>{{$title}} - {{$page}}</h1>
-	
-	<p><i class='toggleplugin {{if $status==on}}icon-check{{else}}icon-check-empty{{/if}} admin-icons'></i> {{$info.name}} - {{$info.version}} : <a href="{{$baseurl}}/admin/{{$function}}/{{$plugin}}/?a=t&amp;t={{$form_security_token}}">{{$action}}</a></p>
+
+	<p>{{if ! $info.disabled}}<i class='toggleplugin {{if $status==on}}icon-check{{else}}icon-check-empty{{/if}} admin-icons'></i>{{else}}<i class='icon-stop admin-icons'></i>{{/if}} {{$info.name}} - {{$info.version}}{{if ! $info.disabled}} : <a href="{{$baseurl}}/admin/{{$function}}/{{$plugin}}/?a=t&amp;t={{$form_security_token}}">{{$action}}</a>{{/if}}</p>
+
+	{{if $info.disabled}}
+	<p>{{$disabled}}</p>
+	{{/if}}
+
 	<p>{{$info.description}}</p>
 	
 	{{foreach $info.author as $a}}
@@ -10,6 +15,16 @@
 	</p>
 	{{/foreach}}
 
+	{{if $info.minversion}}
+	<p class="versionlimit">{{$str_minversion}}{{$info.minversion}}</p>
+	{{/if}}
+	{{if $info.maxversion}}
+	<p class="versionlimit">{{$str_maxversion}}{{$info.maxversion}}</p>
+	{{/if}}
+	{{if $info.minphpversion}}
+	<p class="versionlimit">{{$str_minphpversion}}{{$info.minphpversion}}</p>
+	{{/if}}
+
 
 	{{foreach $info.maintainer as $a}}
 	<p class="maintainer">{{$str_maintainer}}