Complain better for invalid venue filename, closes #1027
Complain better for invalid venue filename, closes #1027

newtheatre/history-project,johnathan99j/history-project,johnathan99j/history-project,newtheatre/history-project,johnathan99j/history-project,johnathan99j/history-project,newtheatre/history-project,newtheatre/history-project,johnathan99j/history-project,newtheatre/history-project