Ticket touts target Belladrum Tartan Heart Festival
Touts started offering tickets to Belladrum at almost double their face value within minutes of the festival selling out, organisers have said.
The 10th anniversary event near Beauly in the Highlands sold out its 15,800 capacity six weeks in advance of it taking place.
Promoter Joe Gibbs said he was disappointed some people had bought tickets in a bid to make a profit.
The sales break the terms and conditions of the printed tickets.
Mr Gibbs said: "There are many disappointed Bella fans clamouring on the social networks, telephone and email who didn't get their tickets in time.
"It is very disappointing to see touts buying up tickets to profit in this way at the expense of genuine music and festival-lovers."
Belladrum uses the Ticket Trust, an exchange scheme the band Radiohead helped to set up for people to buy and sell tickets at face value.
Festival organisers have offered advice to people wanting to sell, or buy, printed and e-tickets in a section on the event's website.
Bands and acts appearing over 2-3 August include James, Twin Atlantic, Seasick Steve, Noisettes, Pigeon Detectives, Admiral Fallow and Julie Fowlis.