codecombat: Ladder game simulation crashes frequently

Ladder game simulation crashes frequently (every 20-30 minutes for me), which makes it hard to simulate a lot of games (and earn those extra gems).

Can something be done to prevent the crashes? Are these caused by bad code submitted? Can that even happen? Can those be detected and removed (automagically) somehow? Or could the page be set to reload every 10 minutes (or so)?

Config: win 7 + chrome 45, but it also happens on linux and firefox (all combinations) on 3 different computers.

Here are the console outputs of some crashed simulations (most recent first):

Finding game to simulate...
widgets.js:1 GET https://platform.twitter.com/js/button.c44c2dc193c555561d5830b3b543eb26.js net::ERR_BLOCKED_BY_CLIENTFunction.bind.test.window.__twttr.window.__twttr.widgets.window.__twttr.widgets.init.e.e @ widgets.js:1r @ widgets.js:9a @ widgets.js:8(anonymous function) @ widgets.js:8o @ widgets.js:8r._flush @ widgets.js:9t.exports @ widgets.js:8p @ widgets.js:8
dueling-grounds:1 Uncaught (in promise) undefined
dueling-grounds:1 Uncaught (in promise) undefined
CocoModel.coffee:95 Populated defaults for Level Zero Sum in 22ms
VM424:34 Generated random seed 3795144476 of type playerSession from sessionIDs ["550828a45106ef000de40cea", "55172d3a81389437054de9eb"] submissionCount 4
LevelLoader.coffee:416 World has been initialized from level loader.
LevelLoader.coffee:311 SuperModel for Level loaded in 1043 ms
God.coffee:70 Venus: Let there be light upon Zero Sum! (preload: undefined)
Angel.coffee:55 |Venus's Cheryl| Worker initialized after 1642ms
Angel.coffee:55 |Venus's Cheryl| Generated random seed 3795144476 of type playerSession from sessionIDs 550828a45106ef000de40cea,55172d3a81389437054de9eb submissionCount 0

(yes, I use uBlock)

Finding game to simulate...
VM10321:34 Generated random seed 811317832 of type playerSession from sessionIDs ["5551d928af92058705a85c18", "5568bf4225803b9805a04558"] submissionCount 3
LevelLoader.coffee:416 World has been initialized from level loader.
LevelLoader.coffee:311 SuperModel for Level loaded in 406 ms
God.coffee:70 Angelos: Let there be light upon Zero Sum! (preload: undefined)
Angel.coffee:55 |Angelos's Krieger| Generated random seed 811317832 of type playerSession from sessionIDs 5551d928af92058705a85c18,5568bf4225803b9805a04558 submissionCount 0

Finding game to simulate...
VM17652:34 Generated random seed 811317832 of type playerSession from sessionIDs ["5551d928af92058705a85c18", "5568bf4225803b9805a04558"] submissionCount 3
LevelLoader.coffee:416 World has been initialized from level loader.
LevelLoader.coffee:311 SuperModel for Level loaded in 1092 ms
God.coffee:70 Týr: Let there be light upon Zero Sum! (preload: undefined)
Angel.coffee:55 |Týr's Ray| Generated random seed 811317832 of type playerSession from sessionIDs 5551d928af92058705a85c18,5568bf4225803b9805a04558 submissionCount 0

Finding game to simulate...
VM6510:34 Generated random seed 8893472723 of type playerSession from sessionIDs ["55658eef5c27898a0511b775", "55aecd4bd3cfb0d61619ecbf"] submissionCount 11
LevelLoader.coffee:416 World has been initialized from level loader.
LevelLoader.coffee:311 SuperModel for Level loaded in 712 ms
God.coffee:70 Apollo: Let there be light upon Zero Sum! (preload: undefined)
Angel.coffee:55 |Apollo's Cheryl| Generated random seed 8893472723 of type playerSession from sessionIDs 55658eef5c27898a0511b775,55aecd4bd3cfb0d61619ecbf submissionCount 0

Finding game to simulate...
VM12505:34 Generated random seed 2089890667 of type playerSession from sessionIDs ["559f5b11ec5a698605d72201", "565453f7b39bfa88054ec2a0"] submissionCount 1
LevelLoader.coffee:416 World has been initialized from level loader.
LevelLoader.coffee:311 SuperModel for Level loaded in 464 ms
God.coffee:70 Tyche: Let there be light upon Zero Sum! (preload: undefined)
Angel.coffee:55 |Tyche's Archer| Generated random seed 2089890667 of type playerSession from sessionIDs 559f5b11ec5a698605d72201,565453f7b39bfa88054ec2a0 submissionCount 0

Finding game to simulate...
VM9188:34 Generated random seed 811317832 of type playerSession from sessionIDs ["5551d928af92058705a85c18", "5568bf4225803b9805a04558"] submissionCount 3
LevelLoader.coffee:416 World has been initialized from level loader.
LevelLoader.coffee:311 SuperModel for Level loaded in 649 ms
God.coffee:70 Baldr: Let there be light upon Zero Sum! (preload: undefined)
Angel.coffee:55 |Baldr's Pam| Generated random seed 811317832 of type playerSession from sessionIDs 5551d928af92058705a85c18,5568bf4225803b9805a04558 submissionCount 0

Finding game to simulate...
VM15952:34 Generated random seed 13844426802 of type playerSession from sessionIDs ["55172d3a81389437054de9eb", "565453f7b39bfa88054ec2a0"] submissionCount 1
LevelLoader.coffee:416 World has been initialized from level loader.
LevelLoader.coffee:311 SuperModel for Level loaded in 726 ms
God.coffee:70 Hachiman: Let there be light upon Zero Sum! (preload: undefined)
Angel.coffee:55 |Hachiman's Ray| Generated random seed 13844426802 of type playerSession from sessionIDs 55172d3a81389437054de9eb,565453f7b39bfa88054ec2a0 submissionCount 0

Finding game to simulate...
VM9304:34 Generated random seed 11052600307 of type playerSession from sessionIDs ["55172d3a81389437054de9eb", "55a9350b431ecfd016c25507"] submissionCount 4
LevelLoader.coffee:416 World has been initialized from level loader.
LevelLoader.coffee:311 SuperModel for Level loaded in 629 ms
God.coffee:70 Inmar: Let there be light upon Zero Sum! (preload: undefined)
Angel.coffee:55 |Inmar's Archer| Generated random seed 11052600307 of type playerSession from sessionIDs 55172d3a81389437054de9eb,55a9350b431ecfd016c25507 submissionCount 0

Finding game to simulate...
CocoModel.coffee:95 Populated defaults for Level Zero Sum in 26ms
Angel.coffee:55 |Tiamat's Ray| Worker initialized after 989ms
VM1951:34 Generated random seed 4496757831 of type playerSession from sessionIDs ["55172d3a81389437054de9eb", "554d35ac64f43b88056f1b95"] submissionCount 4
LevelLoader.coffee:416 World has been initialized from level loader.
LevelLoader.coffee:311 SuperModel for Level loaded in 1623 ms
God.coffee:70 Tiamat: Let there be light upon Zero Sum! (preload: undefined)
Angel.coffee:55 |Tiamat's Ray| Generated random seed 4496757831 of type playerSession from sessionIDs 55172d3a81389437054de9eb,554d35ac64f43b88056f1b95 submissionCount 0

Finding game to simulate...
VM5204:34 Generated random seed 5079033576 of type playerSession from sessionIDs ["550976d42e7f640f07bf7cbc", "55172d3a81389437054de9eb"] submissionCount 4
LevelLoader.coffee:416 World has been initialized from level loader.
LevelLoader.coffee:311 SuperModel for Level loaded in 618 ms
God.coffee:70 Hyperion: Let there be light upon Zero Sum! (preload: undefined)
Angel.coffee:55 |Hyperion's Krieger| Generated random seed 5079033576 of type playerSession from sessionIDs 550976d42e7f640f07bf7cbc,55172d3a81389437054de9eb submissionCount 0

Finding game to simulate...
VM2186:34 Generated random seed 9867670301 of type playerSession from sessionIDs ["5568bf4225803b9805a04558", "55a4e613431ecfd016bf1900"] submissionCount 1
LevelLoader.coffee:416 World has been initialized from level loader.
LevelLoader.coffee:311 SuperModel for Level loaded in 1090 ms
God.coffee:70 Mitra: Let there be light upon Zero Sum! (preload: undefined)
Angel.coffee:55 |Mitra's Cheryl| Generated random seed 9867670301 of type playerSession from sessionIDs 5568bf4225803b9805a04558,55a4e613431ecfd016bf1900 submissionCount 0

Finding game to simulate...
VM23223:34 Generated random seed 8917025934 of type playerSession from sessionIDs ["5568bf4225803b9805a04558", "560cdbdc01365b9a121848bb"] submissionCount 1
LevelLoader.coffee:416 World has been initialized from level loader.
LevelLoader.coffee:311 SuperModel for Level loaded in 533 ms
God.coffee:70 Hunab Ku: Let there be light upon Zero Sum! (preload: undefined)
Angel.coffee:55 |Hunab Ku's Cheryl| Generated random seed 8917025934 of type playerSession from sessionIDs 5568bf4225803b9805a04558,560cdbdc01365b9a121848bb submissionCount 0

Finding game to simulate...
CocoModel.coffee:95 Populated defaults for Level Dueling Grounds in 26ms
VM19597:34 Generated random seed 7579999683 of type playerSession from sessionIDs ["54f7dac4d1606ec105f3ff12", "55659fd705ed6a8b050999b5"] submissionCount 2
LevelLoader.coffee:416 World has been initialized from level loader.
LevelLoader.coffee:311 SuperModel for Level loaded in 797 ms
God.coffee:70 Eos: Let there be light upon Dueling Grounds! (preload: undefined)
Angel.coffee:55 |Eos's Ray| Generated random seed 7579999683 of type playerSession from sessionIDs 54f7dac4d1606ec105f3ff12,55659fd705ed6a8b050999b5 submissionCount 0

Finding game to simulate...
CocoModel.coffee:95 Populated defaults for Level Zero Sum in 20ms
VM8124:34 Generated random seed 28016648899 of type playerSession from sessionIDs ["5518c2a0d69ccd3305a2cd93", "55f4640ea216618405debc2b"] submissionCount 1
LevelLoader.coffee:416 World has been initialized from level loader.
LevelLoader.coffee:311 SuperModel for Level loaded in 695 ms
God.coffee:70 Ullr: Let there be light upon Zero Sum! (preload: undefined)
Angel.coffee:55 |Ullr's Cheryl| Generated random seed 28016648899 of type playerSession from sessionIDs 5518c2a0d69ccd3305a2cd93,55f4640ea216618405debc2b submissionCount 0