I have the same issue… with the latest greatest version.
cat /var/log/mineos.log | grep error
{“date”:“Sun Mar 19 2017 14:28:54 GMT+0000 (UTC)”,“process”:{“pid”:191,“uid”:0,“gid”:0,“cwd”:"/usr/games/minecraft",“execPath”:"/usr/bin/nodejs",“version”:“v4.6.2”,“argv”:["/usr/bin/nodejs","/usr/games/minecraft/webui.js"],“memoryUsage”:{“rss”:110727168,“heapTotal”:75481440,“heapUsed”:55408944}},“os”:{“loadavg”:[1.232421875,2.0263671875,1.9580078125],“uptime”:468154},“trace”:[{“column”:27,“file”:"/usr/games/minecraft/node_modules/sha512crypt-node/sha512crypt.js",“function”:“Object.sha512crypt”,“line”:129,“method”:“sha512crypt”,“native”:false},{“column”:33,“file”:"/usr/games/minecraft/auth.js",“function”:null,“line”:22,“method”:null,“native”:false},{“column”:20,“file”:"/usr/games/minecraft/node_modules/etc-passwd/index.js",“function”:"",“line”:60,“method”:null,“native”:false},{“column”:13,“file”:“events.js”,“function”:“emitOne”,“line”:77,“method”:null,“native”:false},{“column”:7,“file”:“events.js”,“function”:“EventEmitter.emit”,“line”:169,“method”:“emit”,“native”:false},{“column”:21,“file”:"/usr/games/minecraft/node_modules/etc-passwd/index.js",“function”:"",“line”:42,“method”:null,“native”:false},{“column”:13,“file”:“events.js”,“function”:“emitOne”,“line”:77,“method”:null,“native”:false},{“column”:7,“file”:“events.js”,“function”:“LineReadStream.emit”,“line”:169,“method”:“emit”,“native”:false},{“column”:26,“file”:"/usr/games/minecraft/node_modules/etc-passwd/node_modules/lazylines/lazylines.js",“function”:"",“line”:29,“method”:null,“native”:false},{“column”:13,“file”:“events.js”,“function”:“emitOne”,“line”:77,“method”:null,“native”:false}],“stack”:[“TypeError: Cannot read property ‘split’ of undefined”," at Object.sha512crypt (/usr/games/minecraft/node_modules/sha512crypt-node/sha512crypt.js:129:27)"," at /usr/games/minecraft/auth.js:22:33"," at EventEmitter. (/usr/games/minecraft/node_modules/etc-passwd/index.js:60:20)"," at emitOne (events.js:77:13)"," at EventEmitter.emit (events.js:169:7)"," at LineReadStream. (/usr/games/minecraft/node_modules/etc-passwd/index.js:42:21)"," at emitOne (events.js:77:13)"," at LineReadStream.emit (events.js:169:7)"," at ReadStream. (/usr/games/minecraft/node_modules/etc-passwd/node_modules/lazylines/lazylines.js:29:26)"," at emitOne (events.js:77:13)"],“level”:“error”,“message”:“uncaughtException: Cannot read property ‘split’ of undefined”,“timestamp”:“2017-03-19T14:28:54.584Z”}
{“date”:“Sun Mar 19 2017 14:29:06 GMT+0000 (UTC)”,“process”:{“pid”:203,“uid”:0,“gid”:0,“cwd”:"/usr/games/minecraft",“execPath”:"/usr/bin/nodejs",“version”:“v4.6.2”,“argv”:["/usr/bin/nodejs","/usr/games/minecraft/webui.js"],“memoryUsage”:{“rss”:64020480,“heapTotal”:39362656,“heapUsed”:24061664}},“os”:{“loadavg”:[1.3408203125,2.00927734375,1.95361328125],“uptime”:468165},“trace”:[{“column”:27,“file”:"/usr/games/minecraft/node_modules/sha512crypt-node/sha512crypt.js",“function”:“Object.sha512crypt”,“line”:129,“method”:“sha512crypt”,“native”:false},{“column”:33,“file”:"/usr/games/minecraft/auth.js",“function”:null,“line”:22,“method”:null,“native”:false},{“column”:20,“file”:"/usr/games/minecraft/node_modules/etc-passwd/index.js",“function”:"",“line”:60,“method”:null,“native”:false},{“column”:13,“file”:“events.js”,“function”:“emitOne”,“line”:77,“method”:null,“native”:false},{“column”:7,“file”:“events.js”,“function”:“EventEmitter.emit”,“line”:169,“method”:“emit”,“native”:false},{“column”:21,“file”:"/usr/games/minecraft/node_modules/etc-passwd/index.js",“function”:"",“line”:42,“method”:null,“native”:false},{“column”:13,“file”:“events.js”,“function”:“emitOne”,“line”:77,“method”:null,“native”:false},{“column”:7,“file”:“events.js”,“function”:“LineReadStream.emit”,“line”:169,“method”:“emit”,“native”:false},{“column”:26,“file”:"/usr/games/minecraft/node_modules/etc-passwd/node_modules/lazylines/lazylines.js",“function”:"",“line”:29,“method”:null,“native”:false},{“column”:13,“file”:“events.js”,“function”:“emitOne”,“line”:77,“method”:null,“native”:false}],“stack”:[“TypeError: Cannot read property ‘split’ of undefined”," at Object.sha512crypt (/usr/games/minecraft/node_modules/sha512crypt-node/sha512crypt.js:129:27)"," at /usr/games/minecraft/auth.js:22:33"," at EventEmitter. (/usr/games/minecraft/node_modules/etc-passwd/index.js:60:20)"," at emitOne (events.js:77:13)"," at EventEmitter.emit (events.js:169:7)"," at LineReadStream. (/usr/games/minecraft/node_modules/etc-passwd/index.js:42:21)"," at emitOne (events.js:77:13)"," at LineReadStream.emit (events.js:169:7)"," at ReadStream. (/usr/games/minecraft/node_modules/etc-passwd/node_modules/lazylines/lazylines.js:29:26)"," at emitOne (events.js:77:13)"],“level”:“error”,“message”:“uncaughtException: Cannot read property ‘split’ of undefined”,“timestamp”:“2017-03-19T14:29:06.149Z”}
{“level”:“error”,“message”:"[bluedusty_world] Create tail on logs/latest.log failed",“timestamp”:“2017-03-19T16:04:18.445Z”}
{“level”:“error”,“message”:"[bluedusty_world] Create tail on server.log failed",“timestamp”:“2017-03-19T16:04:18.530Z”}
{“level”:“error”,“message”:"[bluedusty_world] Create tail on proxy.log.0 failed",“timestamp”:“2017-03-19T16:04:18.538Z”}
{“level”:“error”,“message”:"[bluedusty_world] Create tail on logs/fml-server-latest.log failed",“timestamp”:“2017-03-19T16:04:18.545Z”}
{“level”:“error”,“message”:"[bluedusty_world] Aborted server startup; condition not met: true",“timestamp”:“2017-03-19T16:04:23.769Z”}
{“level”:“error”,“message”:"[bluedusty_world] Create tail on logs/latest.log failed",“timestamp”:“2017-03-19T16:06:25.538Z”}
{“level”:“error”,“message”:"[bluedusty_world] Create tail on server.log failed",“timestamp”:“2017-03-19T16:06:25.617Z”}
{“level”:“error”,“message”:"[bluedusty_world] Create tail on proxy.log.0 failed",“timestamp”:“2017-03-19T16:06:25.624Z”}
{“level”:“error”,“message”:"[bluedusty_world] Create tail on logs/fml-server-latest.log failed",“timestamp”:“2017-03-19T16:06:25.629Z”}
{“level”:“error”,“message”:"[test] Create tail on logs/latest.log failed",“timestamp”:“2017-03-19T16:06:25.795Z”}
{“level”:“error”,“message”:"[test] Create tail on server.log failed",“timestamp”:“2017-03-19T16:06:25.800Z”}
{“level”:“error”,“message”:"[test] Create tail on proxy.log.0 failed",“timestamp”:“2017-03-19T16:06:25.804Z”}
{“level”:“error”,“message”:"[test] Create tail on logs/fml-server-latest.log failed",“timestamp”:“2017-03-19T16:06:25.807Z”}
{“level”:“error”,“message”:"[bluedusty_world] Aborted server startup; condition not met: true",“timestamp”:“2017-03-19T16:06:30.859Z”}
{“level”:“error”,“message”:"[test] Aborted server startup; condition not met: true",“timestamp”:“2017-03-19T16:06:30.877Z”}
{“level”:“error”,“message”:"[bluedusty_world] Create tail on logs/latest.log failed",“timestamp”:“2017-03-19T16:16:50.534Z”}
{“level”:“error”,“message”:"[bluedusty_world] Create tail on server.log failed",“timestamp”:“2017-03-19T16:16:50.608Z”}
{“level”:“error”,“message”:"[bluedusty_world] Create tail on proxy.log.0 failed",“timestamp”:“2017-03-19T16:16:50.615Z”}
{“level”:“error”,“message”:"[bluedusty_world] Create tail on logs/fml-server-latest.log failed",“timestamp”:“2017-03-19T16:16:50.621Z”}
{“level”:“error”,“message”:"[test] Create tail on logs/latest.log failed",“timestamp”:“2017-03-19T16:16:50.798Z”}
{“level”:“error”,“message”:"[test] Create tail on server.log failed",“timestamp”:“2017-03-19T16:16:50.803Z”}
{“level”:“error”,“message”:"[test] Create tail on proxy.log.0 failed",“timestamp”:“2017-03-19T16:16:50.809Z”}
{“level”:“error”,“message”:"[test] Create tail on logs/fml-server-latest.log failed",“timestamp”:“2017-03-19T16:16:50.814Z”}
{“level”:“error”,“message”:"[bluedusty_world] Aborted server startup; condition not met: true",“timestamp”:“2017-03-19T16:16:55.869Z”}
{“level”:“error”,“message”:"[test] Aborted server startup; condition not met: true",“timestamp”:“2017-03-19T16:16:55.890Z”}