fix false error when receiving write messages

code/tc.preset.js

@@ -930,9 +930,9 @@ function lockedslots() {
 }
 
 function write() {
+    var args = arrayfromargs(arguments);
     if (is_writing) {
         is_writing = 0;
-        var args = arrayfromargs(arguments);
         var filename = args[0];
         var state = args[1];
         if (state) {
@@ -941,8 +941,10 @@ function write() {
             error(pattrstorage_name + ': error while writing ' + filename + '\n');
         }
     } else {
+        if (args.length < 2) {
             error("Send your write messages directly to the pattrstorage instead.\n");
         }
+    }
     
 }