Drew Kerman posted an intermittent bug showing NullReferenceExceptions in the log during asteroid spawns in timewarp. Another player, N3N, reported the same problem but said that reinstalling some (unspecified) third-party mods fixed it.
I cannot reproduce this bug on a clean game of KSP; given this and N3N's report, it is likely a mod conflict of some sort.
Drew Kerman posted an intermittent bug showing NullReferenceExceptions in the log during asteroid spawns in timewarp. Another player, N3N, reported the same problem but said that reinstalling some (unspecified) third-party mods fixed it.
I cannot reproduce this bug on a clean game of KSP; given this and N3N's report, it is likely a mod conflict of some sort.