diff --git a/build.py b/build.py
index e8c5255..a0de64b 100644
--- a/build.py
+++ b/build.py
@@ -75,7 +75,7 @@ class build_manager:
                    'build.py', 'Makefile', 
                    'server/server.cpp', 'server/libaquery.cpp',  
                    'server/monetdb_conn.cpp', 'server/threading.cpp', 
-                   'server/winhelper.cpp' 
+                   'server/winhelper.cpp', 'server/monetdb_ext.c'
                    ]
     headerfiles = ['server/aggregations.h', 'server/hasher.h', 'server/io.h', 
                    'server/libaquery.h', 'server/monetdb_conn.h', 'server/pch.hpp', 
diff --git a/server/monetdb_conn.h b/server/monetdb_conn.h
index 614e3d4..4fe55f6 100644
--- a/server/monetdb_conn.h
+++ b/server/monetdb_conn.h
@@ -35,9 +35,9 @@ struct monetdbe_table_data{
     void* cols;
 };
 
-size_t 
+extern "C" size_t 
 monetdbe_get_size(void* dbhdl, const char *table_name);
 
-void* 
+extern "C" void* 
 monetdbe_get_col(void* dbhdl, const char *table_name, uint32_t col_id);
 #endif
diff --git a/server/monetdb_ext.c b/server/monetdb_ext.c
index fe0e144..06960c1 100644
--- a/server/monetdb_ext.c
+++ b/server/monetdb_ext.c
@@ -69,10 +69,13 @@ monetdbe_get_size(monetdbe_database dbhdl, const char *table_name)
 	monetdbe_database_internal* hdl = (monetdbe_database_internal*)dbhdl;
 	backend* be = ((backend *)(((monetdbe_database_internal*)dbhdl)->c->sqlcontext));
 	mvc *m = be->mvc;
+    //mvc_trans(m);
 	sql_table *t = find_table_or_view_on_scope(m, NULL, "sys", table_name, "CATALOG", false);
+	if (!t) return 0;
 	sql_column *col = ol_first_node(t->columns)->data;
 	sqlstore* store = m->store;
 	size_t sz = store->storage_api.count_col(m->session->tr, col, QUICK);
+	//mvc_cancel_session(m); 
 	return sz; 
 }
 
@@ -81,10 +84,13 @@ monetdbe_get_col(monetdbe_database dbhdl, const char *table_name, uint32_t col_i
     monetdbe_database_internal* hdl = (monetdbe_database_internal*)dbhdl;
 	backend* be = ((backend *)(((monetdbe_database_internal*)dbhdl)->c->sqlcontext));
 	mvc *m = be->mvc;
+    //mvc_trans(m);
 	sql_table *t = find_table_or_view_on_scope(m, NULL, "sys", table_name, "CATALOG", false);
+	if (!t) return 0;
 	sql_column *col = ol_fetch(t->columns, col_id);
 	sqlstore* store = m->store;
 	BAT *b = store->storage_api.bind_col(m->session->tr, col, QUICK);
 	BATiter iter = bat_iterator(b);
+	//mvc_cancel_session(m); 
     return iter.base;
 }
diff --git a/server/server.cpp b/server/server.cpp
index a015422..62da014 100644
--- a/server/server.cpp
+++ b/server/server.cpp
@@ -472,7 +472,7 @@ start:
                                     auto fp = fopen(config_name.c_str(), "rb");
                                     if(fp == nullptr){
                                         puts("ERROR: Procedure not found on disk.");
-                                        return false;
+                                        return true;
                                     }
                                     fread(&p.cnt, sizeof(p.cnt), 1, fp);
                                     fread(&p.postproc_modules, sizeof(p.postproc_modules), 1, fp);
diff --git a/server/vector_type.hpp b/server/vector_type.hpp
index 2581c82..7722a64 100644
--- a/server/vector_type.hpp
+++ b/server/vector_type.hpp
@@ -211,7 +211,7 @@ public:
 	iterator_t erase(iterator_t _it) {
 #ifdef DEBUG 
 		// Do bound checks 
-		if (!(size && capicity && container &&
+		if (!(size && capacity && container &&
 			_it >= container && (_it - container) < size))
 			return 0;
 #endif
diff --git a/tests/triggers.aquery b/tests/triggers.aquery
index eb54269..0636414 100644
--- a/tests/triggers.aquery
+++ b/tests/triggers.aquery
@@ -1,3 +1,5 @@
+#!aquery
+
 procedure one run
 procedure two run
 
@@ -5,4 +7,5 @@ create table t(a int);
 exec
 create trigger a on t action one when two;
 exec
-insert into t(a) values (1);
\ No newline at end of file
+insert into t(a) values (1);
+exec
\ No newline at end of file