Another setback for Whitney

Whitney Houston's comeback tour has received yet another setback today.

The American pop diva has been forced to cancel a Paris concert that had already been re-scheduled after she fell ill last month.

Concert producers say the decision relates to ticket sales and not because of the singer's health problems.

The 46-year-old was forced to cancel four concerts in France and Britain last month due to ill health.

The tour has been dogged by reports of poor performances from the singer.