The mod is more or less free of any bugs, however (clearly) it does require your version of GTA V to be fully updated for the DLC missions to work. Over time, the author has been updating the mod with new missions, such as those which were added to the game with the Lowriders DLC. GTA Online Missions for Single Player by DeaDPooL22 adds a whopping 107 missions to story mode from Online. One modder has taken it upon himself to re-create every solo-compatible GTA Online mission with the build-a-mission modding tool. Namely, the contact missions and other story-driven jobs. Then again, quite a bit of the Online exclusive content would work in SP. Things such as deathmatches or Adversary Modes cannot be truly ported to single player. Granted, much of the content in GTA Online doesn't even work in a solo environments, as they were developed with multiplayer in mind. Currently, GTA 5 is more or less caught up with Online in terms of weapons and vehicles thanks to mods, however there is still a whole lot of content in Online which cannot be accessed with Franklin, Trevor or Michael.