I use Angsuman Translator on this blog to get my content automatically translated to different languages. Not long ago, I deleted all the translated page from the cache and since then noticed that there were lots of newly translated page returning 404 (due to error/service downtime from the translation engines).
Here’s how I got it fixed but instead of showing it for free here, you will need to pay for this tip for USD$15. I’ve dealt with the translator support and they were slow to give a damn and charges a fee of USD$30 anyway. My solution works and your 404 translated page will be fixed in less then 5 minutes!
If you’re interested, simply contact me and we can go from there 🙂