Index: branches/RC/core/install/step_templates/upgrade_modules.tpl
===================================================================
diff -u -N -r10832 -r10836
--- branches/RC/core/install/step_templates/upgrade_modules.tpl	(.../upgrade_modules.tpl)	(revision 10832)
+++ branches/RC/core/install/step_templates/upgrade_modules.tpl	(.../upgrade_modules.tpl)	(revision 10836)
@@ -19,7 +19,7 @@
 <?php
 	$module_tpl = ob_get_clean();
 
-	$selected = $this->GetVar('modules');
+	$selected = $this->GetVar('modules') ? $this->GetVar('modules') : Array ();
 	$modules = $this->GetUpgradableModules();
 	foreach ($modules as $module_name => $module_params) {
 		$module_name = strtolower($module_name);
Index: branches/RC/core/install/step_templates/choose_modules.tpl
===================================================================
diff -u -N -r10832 -r10836
--- branches/RC/core/install/step_templates/choose_modules.tpl	(.../choose_modules.tpl)	(revision 10832)
+++ branches/RC/core/install/step_templates/choose_modules.tpl	(.../choose_modules.tpl)	(revision 10836)
@@ -25,11 +25,23 @@
 		$selected = Array ('kernel', 'proj-base');
 	}
 
+	$modules_helper =& $this->Application->recallObject('ModulesHelper');
+	/* @var $modules_helper kModulesHelper */
+
+	$licensed_modules = array_map('strtolower', $modules_helper->_GetModules());
+
 	$modules = $this->ScanModules();
 	foreach ($modules as $module) {
 		$module_version = $this->toolkit->GetMaxModuleVersion($module);
 		$prerequisites_errors = $this->toolkit->CheckPrerequisites($module . '/', Array ($module_version), 'install');
 
+		$license_module = $module == 'kernel' ? 'in-portal' : $module;
+
+		if (!in_array(strtolower($license_module), $licensed_modules)) {
+			// when module isn't licensed user can't install it
+			array_unshift($prerequisites_errors, 'Module not licensed');
+		}
+
 		if ($prerequisites_errors) {
 			// disable checkbox, when some of prerequisites not passed
 			$checked = 'disabled';