diff --git a/lib/core/settings.py b/lib/core/settings.py
index cdb870f55..fd52b5351 100755
--- 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 = "1.1.7.12"
+VERSION = "1.1.7.13"
 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/sqlmap.py b/sqlmap.py
index 2358a897d..c5944a4ae 100755
--- a/sqlmap.py
+++ b/sqlmap.py
@@ -9,7 +9,10 @@ import sys
 
 sys.dont_write_bytecode = True
 
-__import__("lib.utils.versioncheck")  # this has to be the first non-standard import
+try:
+    __import__("lib.utils.versioncheck")  # this has to be the first non-standard import
+except ImportError:
+    exit("[!] wrong installation detected (missing modules). Visit 'https://github.com/sqlmapproject/sqlmap/#installation' for further details")
 
 import bdb
 import distutils
diff --git a/txt/checksum.md5 b/txt/checksum.md5
index 0a6f865f2..4a038359b 100644
--- a/txt/checksum.md5
+++ b/txt/checksum.md5
@@ -46,7 +46,7 @@ b9ff4e622c416116bee6024c0f050349  lib/core/enums.py
 d8e9250f3775119df07e9070eddccd16  lib/core/replication.py
 785f86e3f963fa3798f84286a4e83ff2  lib/core/revision.py
 40c80b28b3a5819b737a5a17d4565ae9  lib/core/session.py
-2bb10701c510923bc3e3e3744488cf01  lib/core/settings.py
+638ce6f9130caedbc067d2cf1dc8afc6  lib/core/settings.py
 d91291997d2bd2f6028aaf371bf1d3b6  lib/core/shell.py
 2ad85c130cc5f2b3701ea85c2f6bbf20  lib/core/subprocessng.py
 4416fdcab26b286a5a3a88e75aa60044  lib/core/target.py
@@ -224,7 +224,7 @@ c3cc8b7727161e64ab59f312c33b541a  shell/stager.aspx_
 1f7f125f30e0e800beb21e2ebbab18e1  shell/stager.jsp_
 01e3505e796edf19aad6a996101c81c9  shell/stager.php_
 0751a45ac4c130131f2cdb74d866b664  sqlmapapi.py
-b83d4f9b170014ff158f3caa7b735415  sqlmap.py
+9d91bcb91acf7f623f701d528357bba1  sqlmap.py
 08c711a470d7e0bf705320ba3c48b886  tamper/apostrophemask.py
 e8509df10d3f1c28014d7825562d32dd  tamper/apostrophenullencode.py
 bb27f7dc980ea07fcfedbd7da5e5e029  tamper/appendnullbyte.py