Did any of those files get corrupted? Also, check to see if the files are compressed or not.
info.pac - compressed
common5.pac - uncompressed
How do you uncompress common5_en? can't I just use a selcharacter_en?
Of course, while common5.pac isn't compressed, it does contain compressed archives. Namely, sc_selcharacter_en, sc_selcharacter2_en, and sc_selmap_en.
Also, don't forget to include the _en for those files. Lastly, check you XML document, and set up your ssbb folder so that its contents are stored in the proper folders.