Hi guys, just want to let you all know that at the moment, Mark seemed to be super-busy with his personal life and work.
But, don't stop posting your problems/suggestions in this forum because he will come back sometime in future to address them all.
For the time being, my best advice would be to save the game frequently, maybe once/twice every month as you sim by. This is because, based on my personal experience, most of the glitches/errors that I've seen so far never reappeared after reloading a previous save. So, having a save file per month will be a lifesaver especially if you're playing years into the game and have established an important legacy with your label and artists.
But this "fix" may only apply for the minor bugs such as duplicating/missing singles/albums/charts etc. If it's major then I suggest you to send a copy of the saves here and just start a new game for a while until Mark comes back with a new patch/update.