The Catholic Church has no problem with translating Scripture into different languages as long as they aren't heretical translations.
Translating into the common tongue is a good thing. There have always been Catholic translations of the Bible in many languages.
Remember that even the KJV came out *after* the Douay-Rheims
(Catholic English Bible) was published.
But even today I would condemn the Jehovah's Witness Bible (New World Translation), for example, and even stop its publication if I could -- not because I hate the Bible (quite the opposite), but because it is a bad and heretical translation of something holy.