Hi,
I'm getting the exact same issue with Welsh (Code 'cy') which was launched a week or too ago. Is this not working correctly yet?
Spanish Url
works fine:
https://api.datamarket.azure.com/Bing/MicrosoftTranslator/Translate()?Text=%27How%20are%20you%27&To=%27es%27&From=%27en%27
Welsh Url
gets the error: Parameter: To has an invalid pattern of characters
https://api.datamarket.azure.com/Bing/MicrosoftTranslator/Translate()?Text=%27How%20are%20you%27&To=%27cy%27&From=%27en%27
Thanks,