Index: t3lib/cache/frontend/class.t3lib_cache_frontend_stringfrontend.php
===================================================================
--- t3lib/cache/frontend/class.t3lib_cache_frontend_stringfrontend.php	(revision 8764)
+++ t3lib/cache/frontend/class.t3lib_cache_frontend_stringfrontend.php	(working copy)
@@ -56,7 +56,7 @@
 
 		if (!is_string($string)) {
 			throw new t3lib_cache_exception_InvalidData(
-				'Only strings can be digested by the StringCache. Thanks.',
+				'StringCache can only handle Strings, but data given was type "' . gettype($string) . '".',
 				1222808333
 			);
 		}