diff --git a/lib/core/settings.py b/lib/core/settings.py
index 42e501548..57b2ff434 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 = "1.2.11.14"
+VERSION = "1.2.11.15"
 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/plugins/generic/takeover.py b/plugins/generic/takeover.py
index 88a261040..cf721cdae 100644
--- a/plugins/generic/takeover.py
+++ b/plugins/generic/takeover.py
@@ -8,6 +8,7 @@ See the file 'LICENSE' for copying permission
 import os
 
 from lib.core.common import Backend
+from lib.core.common import getSafeExString
 from lib.core.common import isStackingAvailable
 from lib.core.common import readInput
 from lib.core.common import runningAsAdmin
@@ -20,6 +21,7 @@ from lib.core.exception import SqlmapMissingDependence
 from lib.core.exception import SqlmapMissingMandatoryOptionException
 from lib.core.exception import SqlmapMissingPrivileges
 from lib.core.exception import SqlmapNotVulnerableException
+from lib.core.exception import SqlmapSystemException
 from lib.core.exception import SqlmapUndefinedMethod
 from lib.core.exception import SqlmapUnsupportedDBMSException
 from lib.takeover.abstraction import Abstraction
@@ -132,12 +134,16 @@ class Takeover(Abstraction, Metasploit, ICMPsh, Registry, Miscellaneous):
                 errMsg += "http://code.google.com/p/impacket/downloads/list"
                 raise SqlmapMissingDependence(errMsg)
 
-            sysIgnoreIcmp = "/proc/sys/net/ipv4/icmp_echo_ignore_all"
+            filename = "/proc/sys/net/ipv4/icmp_echo_ignore_all"
 
-            if os.path.exists(sysIgnoreIcmp):
-                fp = open(sysIgnoreIcmp, "wb")
-                fp.write("1")
-                fp.close()
+            if os.path.exists(filename):
+                try:
+                    with open(filename, "wb") as f:
+                        f.write("1")
+                except IOError, ex:
+                    errMsg = "there has been a file opening/writing error "
+                    errMsg += "for filename '%s' ('%s')" % (filename, getSafeExString(ex))
+                    raise SqlmapSystemException(errMsg)
             else:
                 errMsg = "you need to disable ICMP replies by your machine "
                 errMsg += "system-wide. For example run on Linux/Unix:\n"
diff --git a/txt/checksum.md5 b/txt/checksum.md5
index 7fb23fc12..ed7e4ad4f 100644
--- a/txt/checksum.md5
+++ b/txt/checksum.md5
@@ -49,7 +49,7 @@ c8c386d644d57c659d74542f5f57f632  lib/core/patch.py
 0c3eef46bdbf87e29a3f95f90240d192  lib/core/replication.py
 a7db43859b61569b601b97f187dd31c5  lib/core/revision.py
 fcb74fcc9577523524659ec49e2e964b  lib/core/session.py
-668bbf57ac4603b3adf6308646c719dc  lib/core/settings.py
+95c2d218452e270a1a84849448d69110  lib/core/settings.py
 a971ce157d04de96ba6e710d3d38a9a8  lib/core/shell.py
 a7edc9250d13af36ac0108f259859c19  lib/core/subprocessng.py
 721198b5be72c8015a02acb116532a1f  lib/core/target.py
@@ -222,7 +222,7 @@ f5d5419efddfe04648ea5e953c650793  plugins/generic/fingerprint.py
 f7874230e5661910d5fd21544c7d1022  plugins/generic/misc.py
 30b421f06dc98998ddc1923a9048b7fc  plugins/generic/search.py
 a70cc0ada4b0cc9e7df23cb6d48a4a0c  plugins/generic/syntax.py
-a37c21cc3fa5c0c220d33d450bf503ed  plugins/generic/takeover.py
+f990d799e578dfbc3cde5728655a7854  plugins/generic/takeover.py
 1265241e309da72bb82c3863a4c1b4bd  plugins/generic/users.py
 1e5532ede194ac9c083891c2f02bca93  plugins/__init__.py
 5dc693e22f5d020c5c568d7325bd4226  shell/backdoors/backdoor.asp_