I'm not a tech guy (so take this explanation with a grain of salt) but I'm pretty sure it's just an issue due to the format of apostrophes and quotation marks.
For example, something like this: There are all these different formats of apostrophes and quotation marks,
but CB uses and only recognizes the first format of apostrophe, and wherever you copy and pasted from uses another. A lot of programs will recognize the other formats of apostrophes, but for whatever reason CB's system doesn't. So it returns a question mark, because that's basically what the system is saying, "I have no idea what this symbol is."