Game might range from ok to good but at least the recent GoG Version 1.1.1 ends in act 2 as rouge class. the script error is known since 2015 shortly after 1.1.1 came out. still no new fix to be found on the developers forum. asked for refund.
I recently bought this pack and played both games for a while. In Betrayal at Krondor I just reached chapter four and did not encounter any problems. That is not the case with Betrayal in Antara. I know this game from my childhood and couldn’t help but notice that the gog.com version hasn’t got the latest patch. This will let you encounter some sad subquest bugs earlier in the game. the one of most renown is the missing temple of henna. Still the game is playable until chapter 4 when the gamebreaking bugs occur. I recommend waiting till gog.com gives us the patched version to download. That is if you care for betrayal in Antara. If you don’t, Betrayal at Krondor seems fine to me.