Index: /issm/trunk/src/c/objects/Hook.cpp
===================================================================
--- /issm/trunk/src/c/objects/Hook.cpp	(revision 4203)
+++ /issm/trunk/src/c/objects/Hook.cpp	(revision 4204)
@@ -196,5 +196,5 @@
 	
 	/*allocate: */
-	if (num<=0) ISSMERROR("cannot demarshall Hook as num<=0");
+	if (num<0) ISSMERROR("cannot demarshall Hook as num<=0");
 	this->ids=(int*)xmalloc(num*sizeof(int));
 	this->offsets=(int*)xmalloc(num*sizeof(int));