Problem requesting map

Hello, I have been trying to build a map from http://garmin.openstreetmap.nl/. When I manually select the tiles I want, enter my email, and click “Build my map”, I get an error message: “Error: Requested map version (10-12-2014) does not exist. This is mostly caused by some browser caching issue. Please clear your browser cache before trying again.” I’ve cleared my cache and have tried this with multiple browsers and computers. Can somebody help? Thank you!

I was getting the same thing yesterday but today (Friday) it seems to be working.