diff --git a/process/CMakeLists.txt b/process/CMakeLists.txt
index 106c4c864..7039bf127 100644
--- a/process/CMakeLists.txt
+++ b/process/CMakeLists.txt
@@ -1,5 +1,5 @@
 install(PROGRAMS create-orders backup-box backup-onedrive
-  run-turn send-zip-report
+  run-turn send-zip-report updatelist.sh
 send-bz2-report compress.py compress.sh epasswd.py
 accept-orders.py getemail.py checkpasswd.py
 sendreport.sh sendreports.sh orders-accept DESTINATION bin)
diff --git a/process/cron/run-eressea.cron b/process/cron/run-eressea.cron
index f72d37482..11993132d 100755
--- a/process/cron/run-eressea.cron
+++ b/process/cron/run-eressea.cron
@@ -86,6 +86,7 @@ backup BACKUP "$GAME" "$TURN"
 upload "$BACKUP"
 rm -f execute.lock
 "$BIN/run-turn" "$GAME" "$TURN"
+"$BIN/updatelist.sh" "$TURN"
 touch execute.lock
 
 (( NEXTTURN=TURN+1 )) || true
diff --git a/process/updatelist.sh b/process/updatelist.sh
new file mode 100755
index 000000000..cf63df8e1
--- /dev/null
+++ b/process/updatelist.sh
@@ -0,0 +1,9 @@
+#!/bin/sh
+
+TURN=$1
+LIST=eressea-announce@kn-bremen.de
+awk '{ if ($2 =="'$TURN'") print $5 }' deadlog.txt |\
+    mailman delmembers -f- -l$LIST
+tail reports/reports.txt | cut -d: -f2 | sed -e 's/email=//' | \
+    mailman addmembers - $LIST
+
diff --git a/src/bind_region.c b/src/bind_region.c
index 782900075..c80eb7efd 100644
--- a/src/bind_region.c
+++ b/src/bind_region.c
@@ -273,15 +273,17 @@ static int tolua_region_has_border(lua_State *L)
     if (btype) {
         direction_t dir = (direction_t)tolua_tonumber(L, 3, 0);
         region *r2 = rconnect(r, dir);
-        connection *b;
-        for (b = get_borders(r, r2); b; b = b->next) {
-            if (b->type == btype) {
-                lua_pushboolean(L, true);
-                return 1;
+        if (r2) {
+            connection *b;
+            for (b = get_borders(r, r2); b; b = b->next) {
+                if (b->type == btype) {
+                    lua_pushboolean(L, true);
+                    return 1;
+                }
             }
+            lua_pushboolean(L, false);
+            return 1;
         }
-        lua_pushboolean(L, false);
-        return 1;
     }
     return 0;
 }
diff --git a/src/kernel/connection.c b/src/kernel/connection.c
index f5dfd43d1..8a6740c78 100644
--- a/src/kernel/connection.c
+++ b/src/kernel/connection.c
@@ -100,8 +100,11 @@ static connection **get_borders_i(const region * r1, const region * r2)
 
 connection *get_borders(const region * r1, const region * r2)
 {
-    connection **bp = get_borders_i(r1, r2);
-    return *bp;
+    if (r1 && r2) {
+        connection **bp = get_borders_i(r1, r2);
+        return *bp;
+    }
+    return NULL;
 }
 
 connection *border_create(region *from)
diff --git a/src/kernel/ship.c b/src/kernel/ship.c
index 5f732aafb..623fa4b83 100644
--- a/src/kernel/ship.c
+++ b/src/kernel/ship.c
@@ -581,7 +581,7 @@ unit *ship_owner(const ship * sh)
 {
     if (sh->number > 0) {
         unit *owner = sh->_owner;
-        if (!owner || owner->ship != sh) {
+        if (!owner || owner->ship != sh || owner->number <= 0) {
             unit * heir = ship_owner_ex(sh, owner ? owner->faction : NULL);
             return (heir && heir->number > 0) ? heir : NULL;
         }
diff --git a/src/kernel/ship.test.c b/src/kernel/ship.test.c
index 4436e43bb..7b1681da9 100644
--- a/src/kernel/ship.test.c
+++ b/src/kernel/ship.test.c
@@ -187,7 +187,7 @@ static void test_shipowner_goes_to_other_when_empty(CuTest * tc)
     u_set_ship(u, sh);
     u_set_ship(u2, sh);
     CuAssertPtrEquals(tc, u, ship_owner(sh));
-    leave_ship(u);
+    u->number = 0;
     CuAssertPtrEquals(tc, u2, ship_owner(sh));
     test_teardown();
 }
diff --git a/src/kernel/version.c b/src/kernel/version.c
index 56acac4fb..b017fdb12 100644
--- a/src/kernel/version.c
+++ b/src/kernel/version.c
@@ -8,7 +8,7 @@
 
 #ifndef ERESSEA_VERSION
 /* the version number, if it was not passed to make with -D */
-#define ERESSEA_VERSION "30.4.0"
+#define ERESSEA_VERSION "31.1.0"
 #endif
 
 const char *eressea_version(void) {
diff --git a/src/main.c b/src/main.c
index 9d8973225..a3de84ae9 100644
--- a/src/main.c
+++ b/src/main.c
@@ -239,7 +239,7 @@ static int parse_args(int argc, char **argv)
             case 'l':
                 i = get_arg(argc, argv, 2, i, &arg, NULL);
                 if (arg) {
-                    log_flags = arg ? atoi(arg) : 0xff;
+                    log_flags = atoi(arg);
                 } else {
                     return usage(argv[0], NULL);
                 }
@@ -263,7 +263,7 @@ static int parse_args(int argc, char **argv)
             case 'w':
                 i = get_arg(argc, argv, 2, i, &arg, NULL);
                 if (arg) {
-                    bcrypt_workfactor = arg ? atoi(arg) : 0xff;
+                    bcrypt_workfactor = atoi(arg);
                 } else {
                     return usage(argv[0], NULL);
                 }
@@ -274,7 +274,7 @@ static int parse_args(int argc, char **argv)
             case 'v':
                 i = get_arg(argc, argv, 2, i, &arg, NULL);
                 if (arg) {
-                    verbosity = arg ? atoi(arg) : 0xff;
+                    verbosity = atoi(arg);
                 }
                 break;
             case 'h':
diff --git a/src/summary.c b/src/summary.c
index b39d0df79..a98f74a5e 100644
--- a/src/summary.c
+++ b/src/summary.c
@@ -248,7 +248,6 @@ static int cmp_nmr_faction(const void *a, const void *b)
 static void report_nmrs(FILE *F, int timeout)
 {
     nmr_faction *nmrs = NULL;
-    size_t len, i;
     faction *f;
     for (f = factions; f; f = f->next) {
         if (turn - 1 - f->lastorders > 0) {
@@ -257,13 +256,16 @@ static void report_nmrs(FILE *F, int timeout)
             nmr->nmr = turn - 1 - f->lastorders;
         }
     }
-    len = arrlen(nmrs);
-    qsort(nmrs, len, sizeof(struct nmr_faction), cmp_nmr_faction);
-    fprintf(F, "\n\nFactions with NMRs:\n");
-    for (i = 0; i != len; ++i) {
-        out_faction(F, nmrs[i].f);
+    if (nmrs) {
+        size_t len, i;
+        len = arrlen(nmrs);
+        qsort(nmrs, len, sizeof(struct nmr_faction), cmp_nmr_faction);
+        fprintf(F, "\n\nFactions with NMRs:\n");
+        for (i = 0; i != len; ++i) {
+            out_faction(F, nmrs[i].f);
+        }
+        arrfree(nmrs);
     }
-    arrfree(nmrs);
 }
 
 void report_summary(const summary * s, bool full)