GPX load problem

I tried the 30day trial mode. But when i would like to add a GPX to a map. I got this error message:

“GPX file could not be parsed – please check your browser console for more information!”

Browser Console message:
} catch (err) {
alert(‘GPX file could not be parsed – please check your browser console for more information!’);
if (window.console) console.log(data);
}

I tried it with more gpx file, neither of them work. Other wordpress plugins work with these GPX files.