diff --git a/bin/tftpy_client.py b/bin/tftpy_client.py
index ce395cc..4671f6f 100755
--- a/bin/tftpy_client.py
+++ b/bin/tftpy_client.py
@@ -87,18 +87,22 @@ def main():
     tclient = tftpy.TftpClient(options.host,
                                int(options.port),
                                tftp_options)
-    if(options.filename):
-      if not options.output:
-          options.output = os.path.basename(options.filename)
-      tclient.download(options.filename,
-                       options.output,
-                       progresshook)
-    elif(options.upload):
-      if not options.input:
-          options.input = os.path.basename(options.upload)
-      tclient.upload(options.upload,
-                       options.input,
-                       progresshook)
+    try:
+        if options.filename:
+            if not options.output:
+                options.output = os.path.basename(options.filename)
+            tclient.download(options.filename,
+                            options.output,
+                            progresshook)
+        elif options.upload:
+            if not options.input:
+                options.input = os.path.basename(options.upload)
+            tclient.upload(options.upload,
+                        options.input,
+                        progresshook)
+    except tftpy.TftpException, err:
+        sys.stderr.write("%s\n" % str(err))
+        sys.exit(1)
 
 if __name__ == '__main__':
     main()
diff --git a/tftpy/TftpClient.py b/tftpy/TftpClient.py
index 0935c61..a840689 100644
--- a/tftpy/TftpClient.py
+++ b/tftpy/TftpClient.py
@@ -119,6 +119,12 @@ class TftpClient(TftpSession):
             if isinstance(recvpkt, TftpPacketDAT):
                 logger.debug("recvpkt.blocknumber = %d" % recvpkt.blocknumber)
                 logger.debug("curblock = %d" % curblock)
+
+                if self.state.state == 'rrq' and self.options:
+                    logger.info("no OACK, our options were ignored")
+                    self.options = { 'blksize': DEF_BLKSIZE }
+                    self.state.state = 'ack'
+
                 expected_block = curblock + 1
                 if expected_block > 65535:
                     logger.debug("block number rollover to 0 again")