Index: cram.install
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/cram/cram.install,v
retrieving revision 1.2.4.2
diff -u -p -r1.2.4.2 cram.install
--- cram.install	21 Feb 2008 05:57:18 -0000	1.2.4.2
+++ cram.install	5 Mar 2008 20:50:15 -0000
@@ -24,7 +24,15 @@ function cram_schema() {
 }
 
 function cram_install() {
-  drupal_install_schema('cram');
+  if (file_exists(drupal_get_path('module', 'cram') .'/md5.js')) {
+    drupal_install_schema('cram');
+  }
+  else {
+    drupal_set_message(t('You need to <a href="@md5lib">download md5.js</a> to the same folder as CRAM.', array(
+      '@md5lib' => 'http://pajhome.org.uk/crypt/md5/',
+    )), 'error');
+    return FALSE;
+  }
 }
 
 function cram_uninstall() {