“反序列化错误” - 带SOCK的foreach / doSNOW / snow（windows）

I'm running a parallel operation using a SOCK cluster with workers on the local machine. If I limit the set I'm iterating over (in one test using 70 instead of a full 135 tasks) then everything works just fine. If I go for the full set, I get the errror "Error in unserialize(socklist[[n]]) : error reading from connection". I'm running a parallel operation using a SOCK c