Hi Toby - can you send us the file you're trying to upload via our Contact Us page and we'll have a look at it?
I don't know whether this is still active, but I am having the SAME problem. Using Mac, tried both Safari and Chrome. Loading to 99% then saying "Unable to load th file". It is in GPX format and was created with Plotaroute before I registerered. I have changed the file name to "Test.gpx" so so spaces, special characters or filename length issues are going to be likely. Please could somebody help? THanks!
Hi Adam - It seems to work OK for me here. I just tried uploading the route in Firefox and Chrome and both worked fine. I've uploaded the route to your account. I'm not sure why it's not working for you - I'll do some investigation and report back if I manage to find the source of the problem. In the meantime, it may be worth trying an alternative browser. Also, it may help to clear your browser's cache.
John