--- DailyRollingFileAppender.java	(revision 572567)
+++ DailyRollingFileAppender.java	(working copy)
@@ -319,16 +319,19 @@ 
 
     File file = new File(fileName);
     boolean result = file.renameTo(target);
+    boolean continueToAppend = false;
     if(result) {
       LogLog.debug(fileName +" -> "+ scheduledFilename);
     } else {
-      LogLog.error("Failed to rename ["+fileName+"] to ["+scheduledFilename+"].");
+      //   if file rename failed, reopen file with append = true
+      LogLog.warn("Failed to rename ["+fileName+"] to ["+scheduledFilename+"].");
+      continueToAppend = true;
     }
 
     try {
       // This will also close the file. This is OK since multiple
       // close operations are safe.
-      this.setFile(fileName, false, this.bufferedIO, this.bufferSize);
+      this.setFile(fileName, continueToAppend, this.bufferedIO, this.bufferSize);
     }
     catch(IOException e) {
       errorHandler.error("setFile("+fileName+", false) call failed.");