It's strange that you are getting that error more than once. You can try to delete everything, including the wallet file, and then download the latest version and re-import your private key.

In case you are wondering, the reason you are getting that error is that your client did not get a good response from the page "http://api.bitwatch.co/pushtx/[your transaction hex]". If you can run the Chancecoin jar from the command line by "java -jar Chancecoin.jar", you can see the url with the transaction hex at the time of the error. You can try to go to that address in your browser to see what it returns and let us know if you need more help.

Venetian