I'm not 100 percent sure what happened and I can't reproduce it since opening the map will always crash the game now.
{F6617}
Relevant section of the log:
[2016-02-29 22:12:54] ACTIVATE MAP true
[2016-02-29 22:12:54] [CLIENT][MAPREQUESTMANAGER] requesting system map for (0, 0, 0)
[2016-02-29 22:12:54] [CLIENT][MAP][POS] SETTING TO (6, 1, 1)
[2016-02-29 22:12:54] [CLIENT][MAPREQUESTMANAGER] requesting system map for (0, 0, 0)
[2016-02-29 22:12:54] java.lang.NullPointerException
[2016-02-29 22:12:54] at obfuscated.me.b_(SourceFile:196)
[2016-02-29 22:12:54] at obfuscated.hL.b_(SourceFile:532)
[2016-02-29 22:12:54] at obfuscated.hn.f(SourceFile:513)
[2016-02-29 22:12:54] at obfuscated.hn.b_(SourceFile:371)
[2016-02-29 22:12:54] at obfuscated.avp.e(SourceFile:782)
[2016-02-29 22:12:54] at obfuscated.avp.a(SourceFile:1167)
[2016-02-29 22:12:54] at obfuscated.C.h(SourceFile:2860)
[2016-02-29 22:12:54] at obfuscated.Qy.run(SourceFile:92)
[2016-02-29 22:12:54] at java.lang.Thread.run(Unknown Source)