So much for bookmark backup

Foxmarks is one of my favorite extensions for Firefox. But to my dismay, it appears to have failed me. Normally it backs up your bookmarks or favorites from Firefox to a server, for synchronization to other computers or purely for backup purposes. This time though it the case would seem to be that my bookmarks have disappeared. Fortunately, I may have a copy of my bookmarks elsewhere, in case I decide that they are really that important to me.