diff --git a/lib/core/settings.py b/lib/core/settings.py
index 18cb2f44f..51c44ce1b 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -19,7 +19,7 @@ from lib.core.enums import DBMS_DIRECTORY_NAME
 from lib.core.enums import OS
 
 # sqlmap version (<major>.<minor>.<month>.<monthly commit>)
-VERSION = "1.2.9.12"
+VERSION = "1.2.9.13"
 TYPE = "dev" if VERSION.count('.') > 2 and VERSION.split('.')[-1] != '0' else "stable"
 TYPE_COLORS = {"dev": 33, "stable": 90, "pip": 34}
 VERSION_STRING = "sqlmap/%s#%s" % ('.'.join(VERSION.split('.')[:-1]) if VERSION.count('.') > 2 and VERSION.split('.')[-1] == '0' else VERSION, TYPE)
diff --git a/lib/utils/versioncheck.py b/lib/utils/versioncheck.py
index 4cbecb0dc..f57ea0682 100644
--- a/lib/utils/versioncheck.py
+++ b/lib/utils/versioncheck.py
@@ -12,12 +12,16 @@ PYVERSION = sys.version.split()[0]
 if PYVERSION >= "3" or PYVERSION < "2.6":
     exit("[CRITICAL] incompatible Python version detected ('%s'). To successfully run sqlmap you'll have to use version 2.6.x or 2.7.x (visit 'https://www.python.org/downloads/')" % PYVERSION)
 
+errors = []
 extensions = ("bz2", "gzip", "pyexpat", "ssl", "sqlite3", "zlib")
-try:
-    for _ in extensions:
+for _ in extensions:
+    try:
         __import__(_)
-except ImportError:
-    errMsg = "missing one or more core extensions (%s) " % (", ".join("'%s'" % _ for _ in extensions))
+    except ImportError:
+        errors.append(_)
+
+if errors:
+    errMsg = "missing one or more core extensions (%s) " % (", ".join("'%s'" % _ for _ in errors))
     errMsg += "most likely because current version of Python has been "
-    errMsg += "built without appropriate dev packages (e.g. 'libsqlite3-dev')"
+    errMsg += "built without appropriate dev packages"
     exit(errMsg)
diff --git a/txt/checksum.md5 b/txt/checksum.md5
index c91220820..86c7c7d17 100644
--- a/txt/checksum.md5
+++ b/txt/checksum.md5
@@ -50,7 +50,7 @@ c8c386d644d57c659d74542f5f57f632  lib/core/patch.py
 0c3eef46bdbf87e29a3f95f90240d192  lib/core/replication.py
 a7db43859b61569b601b97f187dd31c5  lib/core/revision.py
 fcb74fcc9577523524659ec49e2e964b  lib/core/session.py
-39a71984ff7fd683d06c489f33d477a7  lib/core/settings.py
+20762b473b8d387b6f2d6b13aafb0ff1  lib/core/settings.py
 dd68a9d02fccb4fa1428b20e15b0db5d  lib/core/shell.py
 a7edc9250d13af36ac0108f259859c19  lib/core/subprocessng.py
 815d1cf27f0f8738d81531e73149867d  lib/core/target.py
@@ -118,7 +118,7 @@ d0f4d56c5d6a09a4635035e233d4a782  lib/utils/hash.py
 2c5a655c8e94cbe2664ee497752ac1f2  lib/utils/search.py
 571884f530796534f03c49cf3f380a4c  lib/utils/sqlalchemy.py
 dcc25183c6bd85b172c87cfcbc305ab6  lib/utils/timeout.py
-fad14adffa8b640a15b06db955031695  lib/utils/versioncheck.py
+faa7536c4788ee118b19338f3e98e556  lib/utils/versioncheck.py
 e9e73cd6bd814dd7823a9da913cea61c  lib/utils/xrange.py
 b9d2761f47fec3d98b88311a263fd5db  plugins/dbms/access/connector.py
 3f1c50a1507d1c2f69c20c706230e2e2  plugins/dbms/access/enumeration.py