When there's a data error, the specific tab gets a red background. The colours you describe are the standard text colours for selected and not-selected tabs, though, so if no tab had a red background, you probably just hit a load issue (we've had overloaded servers at times lately, we're moving servers soon but the issues will continue in the meantime), and the solution would have been to just try again until it worked. The error messages for those are pretty useless though
Bugs do happen though, specially in constantly-evolving open source software. Not much that can be done about that, unless we get a ton of money from somewhere to hire dedicated testers
Anyway, I've imported a digital version of the album in question from iTunes, so at least that's in now. Sorry for the annoyance!