Hello,
The problem you're encountering exists because we are in the process of changing parts of the infrastructure and a backend component is refusing to comply. We're working on fixing this asap.
I was wondering if there has been any resolution yet? I don't get an error, https://atlas.ripe.net/atlas/udm.html simply comes up blank.
It should work -- though it may take a second or two to load. If you can reproduce it (after a page reload) then please drop us a mail to atlas@ripe.net and tell us when this happened. (And if you're up to it, a firebug report would be even more helpful!)
FWIW, I do not get a blank page, I can access My Measurements just fine, but I will get a "This section is temporarily disabled. We'll be fixing it soon though!" message when trying to see the latest msm results - which comes as no surprise given the recent announcements.
The "last 100" page has been pretty under-used before, and will most likely be superseded by the "probes" tab. This is already the case for ping type measurements. Regards, Robert