diff --git a/wrap/gcache/cache.h b/wrap/gcache/cache.h
index c7db7475..6f28cfe7 100644
--- a/wrap/gcache/cache.h
+++ b/wrap/gcache/cache.h
@@ -1,12 +1,14 @@
 #ifndef GCACHE_CACHE_H
 #define GCACHE_CACHE_H
 
+#include <iostream>
 #include <limits.h>
 #include <vector>
 
 #include <QThread>
 #include "provider.h"
 
+using namespace std;
 /* this cache system enforce the rule that the items in a cache are always in all the cache below */
 /* two mechanism to remove tokens from the cache:
       1) set token count to something low
@@ -79,7 +81,7 @@ class Cache: public Provider<Token> {
         if(functor(token)) { //drop it
           tokens.push_back(token);
           s_curr -= drop(token);
-          assert(!token->count >= Token::LOCKED);
+          assert(token->count < Token::LOCKED);
           if(final)
             token->count.testAndSetOrdered(Token::READY, Token::CACHE);
         } else
diff --git a/wrap/gcache/controller.h b/wrap/gcache/controller.h
index 62e2eb32..8f13bf81 100644
--- a/wrap/gcache/controller.h
+++ b/wrap/gcache/controller.h
@@ -47,13 +47,12 @@ class Controller {
   ///WARNING: migh stall for the time needed to drop tokens from cache.
   //FUNCTOR has bool operator(Token *) and return true to remove
   template<class FUNCTOR> void removeTokens(FUNCTOR functor) {
-    stop(); //this might actually be unnecessary if you mark tokens to be removed
-    for(quint32 i = 0; i < caches.size(); i++)
+    pause(); //this might actually be unnecessary if you mark tokens to be removed
+    for(int i = (int)caches.size()-1; i >= 0; i--)
       caches[i]->flush(functor);
-
     provider.flush(functor);
 
-    start();
+    resume();
   }
 
   ///if more tokens than m present in the provider, lowest priority ones will be removed
@@ -109,17 +108,25 @@ class Controller {
 
   void pause() {
     if(paused) return;
-    provider.heap_lock.lock();
+    provider.check_queue.lock();
+    for(unsigned int i = 0; i < caches.size()-1; i++)
+      caches[i]->check_queue.lock();
+/*    provider.heap_lock.lock();
     for(unsigned int i = 0; i < caches.size(); i++)
-      caches[i]->heap_lock.lock();
+      caches[i]->heap_lock.lock(); */
     paused = true;
   }
 
   void resume() {
     if(!paused) return;
-    provider.heap_lock.unlock();
+    provider.check_queue.unlock();
+    for(unsigned int i = 0; i < caches.size()-1; i++)
+      caches[i]->check_queue.unlock();
+
+
+/*    provider.heap_lock.unlock();
     for(unsigned int i = 0; i < caches.size(); i++)
-      caches[i]->heap_lock.unlock();
+      caches[i]->heap_lock.unlock(); */
     paused = false;
   }
   ///empty all caches AND REMOVES ALL TOKENS!
diff --git a/wrap/gcache/dheap.h b/wrap/gcache/dheap.h
index faf6d060..2e474139 100644
--- a/wrap/gcache/dheap.h
+++ b/wrap/gcache/dheap.h
@@ -255,7 +255,7 @@ class PtrDHeap {
     heap.push_back(Item(t));
   }
   int size() { return heap.size(); }
-  void resize(int n) { assert(n < (int)heap.size()); return heap.resize(n, Item(NULL)); }
+  void resize(int n) { assert(n <= (int)heap.size()); return heap.resize(n, Item(NULL)); }
   void clear() { heap.clear(); }
   T &min() { Item &i = heap.min(); return *i.value; }
   T *popMin() { Item i = heap.popMin(); return i.value; }
diff --git a/wrap/gcache/door.h b/wrap/gcache/door.h
index ed0e687c..7dfbca1d 100644
--- a/wrap/gcache/door.h
+++ b/wrap/gcache/door.h
@@ -99,6 +99,12 @@ class QDoor {
     m.unlock();
     return w;
   }
+  void lock() { //prevend door opening and entering
+    m.lock();
+  }
+  void unlock() { //reverse effect of lock
+    m.unlock();
+  }
  private:
   QMutex m;
   QWaitCondition c;