--- gigedit/trunk/src/gigedit/global.h	2014/05/13 12:17:43	2548
+++ gigedit/trunk/src/gigedit/global.h	2014/06/07 22:34:31	2604
@@ -48,6 +48,7 @@
 
 /// Find the number of bits required to hold the specified amount of zones.
 inline int zoneCountToBits(int nZones) {
+    if (!nZones) return 0;
     int iFinalBits = 0;
     int zoneBits = nZones - 1;
     for (; zoneBits > 1; iFinalBits += 2, zoneBits >>= 2);