Index: src/common/FileSupport.cpp
===================================================================
diff -u -N -rd5c3edd0d167db9b5d47d04248820fda49499a5e -r68739164e349c34dcd0bcb36c6eb381f23cb8b77
--- src/common/FileSupport.cpp	(.../FileSupport.cpp)	(revision d5c3edd0d167db9b5d47d04248820fda49499a5e)
+++ src/common/FileSupport.cpp	(.../FileSupport.cpp)	(revision 68739164e349c34dcd0bcb36c6eb381f23cb8b77)
@@ -91,9 +91,9 @@
 	if(!GetDiskFreeSpaceEx(lpszPath, &ui64Available, &ui64Total, NULL))
 	{
 		if(pFree)
-			*pFree=-1;
+			*pFree = 0;
 		if(pTotal)
-			*pTotal=-1;
+			*pTotal = 0;
 		return false;
 	}
 	else