Adobe Animate Error 1172: Definition com.adobe.serialization.json:JSON could not be found

Hi,

Any advise is appreciated.

I have a AIR for iOS file previously done in Flash Professional CC 2015, with com.adobe.serialization.json.JSON and com.adobe.serialization.json.JSONParseError imported in an AS file to parse out and decode the JSON string for oauth2 procedure. Since I upgraded to Adobe Animate CC 2015, today when I opened up the file and tried to publish the IPA, it returns the following errors:

1172: Definition com.adobe.serialization.json:JSON could not be found.

1172: Definition com.adobe.serialization.json:JSONParseError could not be found.

1120: Access of undefined property JSON.

1046: Type was not found or was not a compile-time constant: JSONParseError.

1046: Type was not found or was not a compile-time constant: JSONParseError.

I don't know what caused this in the new Animate CC and how to fix this problem. Please help if you may provide any insights/solutions. Thank you very much!

Regards,
yu