system
6
Because of setup’s atomicity (the operations are quite independent) and the potential possibilities of errors in each operation, it’s the only option - avast! is good only when all of its subparts are good too. And such subparts are only good if their files are also good.
I've got a few translated help files here (without the program translation, which does not exist) - that are rather hard to use this way... the English help cannot be replaced because of this feature.
Your files are bad. Bad files. ;D
That should be done in a classic way - dummy language dll (english one) and corresponding help (non-english one).