diff -r a94d1dc4a8d9 -r 45778b16b224 gameServer/Store.hs
--- a/gameServer/Store.hs	Sun Jul 25 18:55:54 2010 +0400
+++ b/gameServer/Store.hs	Sun Jul 25 22:39:59 2010 +0400
@@ -77,7 +77,7 @@
 removeElem :: MStore e -> ElemIndex -> IO ()
 removeElem (MStore ref) (ElemIndex n) = do
     (busyElems, freeElems, arr) <- readIORef ref
-    IOA.writeArray arr n (error "Store: no element")
+    IOA.writeArray arr n (error $ "Store: no element " ++ show n)
     writeIORef ref (IntSet.delete n busyElems, IntSet.insert n freeElems, arr)