diff --git a/componentbuilderlanguagepackaging.xml b/componentbuilderlanguagepackaging.xml
index b7b4cd4..9fe78b3 100644
--- a/componentbuilderlanguagepackaging.xml
+++ b/componentbuilderlanguagepackaging.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <extension type="plugin" version="4" group="extension" method="upgrade">
 	<name>PLG_EXTENSION_COMPONENTBUILDERLANGUAGEPACKAGING</name>
-	<creationDate>20th August, 2022</creationDate>
+	<creationDate>20th September, 2022</creationDate>
 	<author>Llewellyn van der Merwe</author>
 	<authorEmail>joomla@vdm.io</authorEmail>
 	<authorUrl>https://dev.vdm.io</authorUrl>
diff --git a/script.php b/script.php
index de8fa67..322e58e 100644
--- a/script.php
+++ b/script.php
@@ -43,6 +43,48 @@ class plgExtensionComponentbuilderLanguagePackagingInstallerScript
 
 		if ('install' === $route)
 		{
+// TODO preflight must be an instance...
+
+// TODO preflight must be an instance...
+
+// needs fix
+
+
+			// check that componentbuilder is installed
+			$pathToCore = JPATH_ADMINISTRATOR . '/components/com_componentbuilder/helpers/componentbuilder.php';
+			if (!JFile::exists($pathToCore))
+			{
+				$app->enqueueMessage('Joomla Component Builder must first be installed from <a href="https://www.joomlacomponentbuilder.com/ " target="_blank">Joomla Component Builder</a>.', 'error');
+				return false;
+			}
+			// load the helper class
+			JLoader::register('ComponentbuilderHelper', JPATH_ADMINISTRATOR . '/components/com_componentbuilder/helpers/componentbuilder.php');
+			// block install
+			$blockInstall = true;
+			// check the version of JCB
+			$manifest = ComponentbuilderHelper::manifest();
+			if (isset($manifest->version) && strpos($manifest->version, '.') !== false)
+			{
+				// get the version
+				$jcbVersion = explode('.', $manifest->version);
+				// check that we have JCB 3.0.0 or higher installed
+				if (count($jcbVersion) == 3 && $jcbVersion[0] >= 3 &&
+					(
+						($jcbVersion[0] == 3 && $jcbVersion[1] == 0 && $jcbVersion[2] >= 0) ||
+						($jcbVersion[0] == 3 && $jcbVersion[1] > 0) ||
+						$jcbVersion[0] > 3)
+					)
+				{
+					$blockInstall = false;
+				}
+			}
+			// allow install if all conditions are met
+			if ($blockInstall)
+			{
+				$app->enqueueMessage('Please upgrade to JCB-Pro v3.0.0 or higher before installing this plugin.', 'error');
+				return false;
+			}
+
 			// check that componentbuilder is installed
 			$pathToCore = JPATH_ADMINISTRATOR . '/components/com_componentbuilder/helpers/componentbuilder.php';
 			if (!JFile::exists($pathToCore))