Merge pull request #1420 from IT-Can/fix-issue-1419

Fix issues #1397, #1419
diff --git a/system/libraries/Driver.php b/system/libraries/Driver.php
index c79698c..d67ee25 100644
--- a/system/libraries/Driver.php
+++ b/system/libraries/Driver.php
@@ -51,7 +51,7 @@
 	 *
 	 * @var string
 	 */
-	protected static $lib_name;
+	protected $lib_name;
 
 	/**
 	 * The first time a child is used it won't exist, so we instantiate it
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index de4af7e..587e56e 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -224,6 +224,7 @@
 -  Fixed a bug (#319) - SQLSRV's affected_rows() method failed due to a scrollable cursor being created for write-type queries.
 -  Fixed a bug (#356) - PostgreSQL driver didn't have an _update_batch() method, which resulted in fatal error being triggered when update_batch() is used with it.
 -  Fixed a bug (#862) - create_table() failed on SQLSRV/MSSQL when used with 'IF NOT EXISTS'.
+-  Fixed a bug (#1419) - libraries/Driver.php had a static variable that was causing an error.
 
 Version 2.1.1
 =============