How to check integrity of Assets?

Since some Builds of our game, our testers report lots of crashes with a stack trace output like this:

 Object::Transfer<StreamedBinaryRead<1> > + 0xbaeab

This seems to be either corrupted data or a Unity bug. If you search the web you can find some other Unity Games having exactly the same error. The crashes are happening in different situations were a connection between them isn't clearly visible.

We noticed that sometimes a prefab couldn't be recognized as prefab in the project view, so we need to delete it in the explorer and discard it (we are using the Asset Server), so it gets downloaded again.

Now the question is, how we could check the integrity of Assets? Reimporting the hole project doesn't give any errors. Any other suggestions?