Action call with a csv, but render html with flash

Does anyone know how to get an action call with csv to render html
with flash? I can get it to work locally but when I upload to the
server it keeps trying to render a csv file with the html inside it.

unless flash[:error].blank?
render :template => ‘/report/action’ and return
@content_type = ‘text/html’
respond_to do |format|
format.html
end
else
respond_to do |format|
format.html
format.csv { render :layout => false }
end
end