Email reports doesn't work


I use Piwik 1.12.

I can not send email reports, neither manually neither automaticaly.

When I click on “download report”, the page send back an error message telling it doesn’t support multiple date.
Then i took a look to the URL and realised that the parameter date is a range.
If I remove the first part of the parameter, the URL displays the report.

NOK ->

OK ->

Thanks for your help to debug it.