Currently, every of my stellaris games are crashing at a certain day (not every time the same day)... so I thought I am posting my error log here - maybe someone can help me. I have never had these problems on my old MacBook, but since I have restarted playing stellaris on another MacBook, these crashes are coming up (yes, I tried reinstalling etc..) Thanks! 
[13:32:46][trigger_impl.cpp:1217]: Script Error: Invalid context switch [federation] from Sith Empire [country], file: common/policies/inf_policies.txt line: 34, Scope:
type=country
id=0
random={ 0 3991148998 }
random_allowed=no
[13:32:46][trigger_impl.cpp:1217]: Script Error: Invalid context switch [federation] from Ytrellan Watchers [country], file: common/policies/inf_policies.txt line: 34, Scope:
type=country
id=17
random={ 0 3991148998 }
random_allowed=no
[13:32:46][trigger_impl.cpp:1217]: Script Error: Invalid context switch [federation] from Lahtrepian Conservers [country], file: common/policies/inf_policies.txt line: 34, Scope:
type=country
id=18
random={ 0 3991148998 }
random_allowed=no
[13:32:46][policy.cpp:485]: Could not get a valid policy option in policy group Diplomatic Stance for Voldareen Civilization
[13:32:46][country.cpp:14603]: Country with ID 40 tried to set a non potential policy: diplomatic_stance
[13:32:46][trigger_impl.cpp:1217]: Script Error: Invalid context switch [federation] from Sith Empire [country], file: common/policies/inf_policies.txt line: 34, Scope:
type=country
id=0
random={ 0 3991148998 }
random_allowed=no
[13:32:46][trigger_impl.cpp:1217]: Script Error: Invalid context switch [federation] from Ytrellan Watchers [country], file: common/policies/inf_policies.txt line: 34, Scope:
type=country
id=17
random={ 0 3991148998 }
random_allowed=no
[13:32:46][trigger_impl.cpp:1217]: Script Error: Invalid context switch [federation] from Lahtrepian Conservers [country], file: common/policies/inf_policies.txt line: 34, Scope:
type=country
id=18
random={ 0 3991148998 }
random_allowed=no
[13:32:46][policy.cpp:485]: Could not get a valid policy option in policy group Diplomatic Stance for Voldareen Civilization
[13:32:46][country.cpp:14603]: Country with ID 40 tried to set a non potential policy: diplomatic_stance