diff --git a/polymer/eduke32/build/src/build.c b/polymer/eduke32/build/src/build.c
index c57426947..e7cb10930 100644
--- a/polymer/eduke32/build/src/build.c
+++ b/polymer/eduke32/build/src/build.c
@@ -5801,9 +5801,9 @@ check_next_sector: ;
                         sector[numsectors].extra = -1;
                         sector[numsectors].lotag = sector[numsectors].hitag = 0;
 
-                        sector[numsectors].ceilingstat &= ~2;
-                        sector[numsectors].floorstat &= ~2;
-                        sector[numsectors].ceilingheinum = sector[numsectors].floorheinum = 0;
+                        setslope(numsectors, YAX_CEILING, 0);
+                        setslope(numsectors, YAX_FLOOR, 0);
+
                         sector[numsectors].ceilingpal = sector[numsectors].floorpal = 0;
 #ifdef YAX_ENABLE
                         yax_setbunches(numsectors, -1, -1);
diff --git a/polymer/eduke32/samples/a.m32 b/polymer/eduke32/samples/a.m32
index 71ef7d9ea..f45dc9841 100644
--- a/polymer/eduke32/samples/a.m32
+++ b/polymer/eduke32/samples/a.m32
@@ -1195,52 +1195,6 @@ defstate chselshade
     }
 ends
 
-defstate correctslopes
-    "Correct cstat&2/heinum"
-    for i allsectors
-    {
-        set j sector[i].ceilingstat, and j 2
-        ife j 2
-        {
-            ife sector[i].ceilingheinum 0
-            {
-                sub sector[i].ceilingstat 2
-                qsprintf TQUOTE "sec %d ceilingstat cleared bit 2" i
-                quote TQUOTE
-            }
-        }
-        else
-        {
-            ifn sector[i].ceilingheinum 0
-            {
-                set sector[i].ceilingheinum 0
-                qsprintf TQUOTE "sec %d ceilingheinum set to 0" i
-                quote TQUOTE
-            }
-        }
-
-        set j sector[i].floorstat, and j 2
-        ife j 2
-        {
-            ife sector[i].floorheinum 0
-            {
-                sub sector[i].floorstat 2
-                qsprintf TQUOTE "sec %d floorstat cleared bit 2" i
-                quote TQUOTE
-            }
-        }
-        else
-        {
-            ifn sector[i].floorheinum 0
-            {
-                set sector[i].floorheinum 0
-                qsprintf TQUOTE "sec %d floorheinum set to 0" i
-                quote TQUOTE
-            }
-        }
-    }
-ends
-
 ////////// USER AREA //////////
 
 // key settings
diff --git a/polymer/eduke32/source/astub.c b/polymer/eduke32/source/astub.c
index 5d610a317..3db5381f3 100644
--- a/polymer/eduke32/source/astub.c
+++ b/polymer/eduke32/source/astub.c
@@ -5337,15 +5337,8 @@ static void Keys3d(void)
             break;
         }
 
-        if (sector[searchsector].ceilingheinum == 0)
-            sector[searchsector].ceilingstat &= ~2;
-        else
-            sector[searchsector].ceilingstat |= 2;
-
-        if (sector[searchsector].floorheinum == 0)
-            sector[searchsector].floorstat &= ~2;
-        else
-            sector[searchsector].floorstat |= 2;
+        setslope(searchsector, YAX_CEILING, sector[searchsector].ceilingheinum);
+        setslope(searchsector, YAX_FLOOR, sector[searchsector].floorheinum);
 
         asksave = 1;
         noclip = i;
@@ -6538,7 +6531,8 @@ static void Keys3d(void)
                     (bunchnum < 0 || YAXSLOPECHK(searchsector, othersidesect)))
 #endif
             {
-                int32_t newslope = clamp(AIMED_CEILINGFLOOR(heinum) + tsign*i, -BHEINUM_MAX, BHEINUM_MAX);
+                int32_t oldslope = (AIMED_CEILINGFLOOR(stat)&2) ? AIMED_CEILINGFLOOR(heinum) : 0;
+                int32_t newslope = clamp(oldslope + tsign*i, -BHEINUM_MAX, BHEINUM_MAX);
 
                 setslope(searchsector, AIMING_AT_FLOOR, newslope);
 #ifdef YAX_ENABLE
@@ -6549,17 +6543,7 @@ static void Keys3d(void)
                               typestr[searchstat], AIMED_CEILINGFLOOR(heinum));
             }
         }
-/*
-        if (sector[searchsector].ceilingheinum == 0)
-            sector[searchsector].ceilingstat &= ~2;
-        else
-            sector[searchsector].ceilingstat |= 2;
 
-        if (sector[searchsector].floorheinum == 0)
-            sector[searchsector].floorstat &= ~2;
-        else
-            sector[searchsector].floorstat |= 2;
-*/
         asksave = 1;
     }
 
@@ -10258,7 +10242,12 @@ int32_t ExtInit(void)
         while (CommandPaths)
         {
             s = CommandPaths->next;
-            addsearchpath(CommandPaths->str);
+            i = addsearchpath(CommandPaths->str);
+            if (i < 0)
+            {
+                initprintf("Failed adding %s for game data: %s\n", CommandPaths->str,
+                           i==-1 ? "not a directory" : "no such directory");
+            }
 
             Bfree(CommandPaths->str);
             Bfree(CommandPaths);
@@ -11443,6 +11432,33 @@ int32_t CheckMapCorruption(int32_t printfromlev, uint64_t tryfixing)
         if (endwall > numwalls)
             CORRUPTCHK_PRINT(4, CORRUPT_SECTOR|i, "SECTOR[%d]: wallptr+wallnum=%d out of range: numwalls=%d", i, endwall, numwalls);
 
+        // inconsistent cstat&2 and heinum checker
+        {
+            int32_t cs, hn;
+            const char *cflabel[2] = {"ceiling", "floor"};
+
+            for (j=0; j<2; j++)
+            {
+                cs = !!(SECTORFLD(i,stat, j)&2);
+                hn = (SECTORFLD(i,heinum, j)!=0);
+
+                if (cs != hn)
+                {
+                    if (numcorruptthings < MAXCORRUPTTHINGS && (tryfixing & (1ull<<numcorruptthings)))
+                    {
+                        setslope(i, j, 0);
+                        OSD_Printf(CCHK_CORRECTED "auto-correction: reset sector %d's %s slope\n",
+                                   i, cflabel[j]);
+                    }
+                    else
+                    {
+                        CORRUPTCHK_PRINT(2, CORRUPT_SECTOR|i,
+                                         "SECTOR[%d]: inconsistent %sstat&2 and heinum", i, cflabel[j]);
+                    }
+                }
+            }
+        }
+
         errlevel = max(errlevel, bad);
 
         if (bad<4)
@@ -11951,6 +11967,7 @@ static void EditSectorData(int16_t sectnum)
             case 5:
                 handlemed(0, "Ceiling heinum", "Ceiling Heinum", &sector[sectnum].ceilingheinum,
                           sizeof(sector[sectnum].ceilingheinum), BHEINUM_MAX, 1);
+                setslope(sectnum, YAX_CEILING, sector[sectnum].ceilingheinum);
                 break;
             case 6:
                 handlemed(0, "Palookup number", "Ceiling Palookup Number", &sector[sectnum].ceilingpal,
@@ -12002,6 +12019,7 @@ static void EditSectorData(int16_t sectnum)
             case 5:
                 handlemed(0, "Floor heinum", "Floor Heinum", &sector[sectnum].floorheinum,
                           sizeof(sector[sectnum].floorheinum), BHEINUM_MAX, 1);
+                setslope(sectnum, YAX_FLOOR, sector[sectnum].floorheinum);
                 break;
             case 6:
                 handlemed(0, "Palookup number", "Floor Palookup Number", &sector[sectnum].floorpal,
diff --git a/polymer/eduke32/source/game.c b/polymer/eduke32/source/game.c
index 772cd12df..3cc2269e5 100644
--- a/polymer/eduke32/source/game.c
+++ b/polymer/eduke32/source/game.c
@@ -9701,7 +9701,12 @@ int32_t app_main(int32_t argc,const char **argv)
         while (CommandPaths)
         {
             s = CommandPaths->next;
-            addsearchpath(CommandPaths->str);
+            i = addsearchpath(CommandPaths->str);
+            if (i < 0)
+            {
+                initprintf("Failed adding %s for game data: %s\n", CommandPaths->str,
+                           i==-1 ? "not a directory" : "no such directory");
+            }
 
             Bfree(CommandPaths->str);
             Bfree(CommandPaths);