“Welcome to theatre in the park!” announced Genesius Guild Executive Director Doug Tschopp at the June 24 presentation of The Comedy of Errors. Tschopp didn’t, however, say this during his customary greeting and introductory remarks. He said it during an unplanned break roughly 20 minutes into the Shakespeare comedy while he, director Bryan Woods, and a stagehand used makeshift mops to soak up the accumulating rain that had been causing performers to slip.