This has been addressed elsewhere by folks more knowledgeable than myself, but yes, there is a door missing on the map, and the compass roses (compasses rose?) all got turned 90 degrees in post production (just always use the page top as North, and you're fine, I believe).
As for 'first printing', 'second printing', etc. There was only one printing, I think. There may well have been expectations that there would be future printings, but there was this little thing that came along called 4th Edition D&D, and that has actually managed to have some impact on the FRP gaming world. Perhaps it maybe had some effect on plans for the DCC line? I can't say for certain, since I'm only an observer, but it may have done....
Gnome Boy (a.k.a. "Jon") • DCC play-tester @ DDC 35, Feb 2011. • Beta DL 2111, 7:00 AM PT, 8 June 11.Playing RPGs since 1977
• Quasi-occasional member of the Legion of 8th-Level Fighters - Holds the power to play gnomes at will!Here Be DCC Monsters...General Yoros, Warrior, Str 13, Agl 8 (10), Stm 17, Per 13, Int 11, Lck 8; Law, HP 39, AC 17, R+2, F+4, W+2, band/shld, warhammer, longsword, longbow, pitchfork
Han Dee, (Weaver) Neutral Thief, Str 10, Agi 13, Stm 11, Per 11, Int 15, Lck 14, AC 13 (Leather), HP 25, Luck Die d6, Backstab 3, Sneak Silently 10, Hide In Shadows 9, Pick Pocket 10, Climb Sheer 10, Pick Lock 9, Find Trap 9, Disable Trap 9, Forge Doc 10, Disguise 3, Read Lang 5, Handle Poison 3, Cast Scroll d14+2, birth augur (Born under the loom) +1 to all skill checks (including thief skills), Banepicks (auto pick lock/disable trap, but lose 1d3 random ability loss, if a 3 then 1 pt is perm)