Language package

I am using mac os ver. 10.12.1. I found I cannot add text remark to my pdf file. It showed a message indicated an error occurred and downloading a traditional Chinese language package (繁體中文語言支援包) may help. However, such file is not seen in adobe site. Could any one give me a help?

P.S. Except typing words, all other function (such as underlying, highlighting) are normal. The only problem is can't type words !