Becky - I think chrondomalacia patella is another term for the generic 'runner's knee', which can cover all sorts of knee issues including maltracking patella. As you may have gathered, everybody is different and there is no way of knowing when you will be able to run again. If I were you I would go see a physio. At least that way you're getting a proper assessment (not dissing your masseure, but physio will know more) and hopefully start some rehabilitation.
I've had problems on and off over the years with my right knee. I need to wear orthotics and they certainly helped re-align things properly. However about a year ago started getting knee pain again (think I overdid some hill runs) and have spent the best part of 9 months getting physio for it.
Not only do I have a foolscap size page of strenghening exercises to do on VMO, calf, glute and overall balancing, but had to have my orthotics adjusted as they were throwing my hip out, which in turn was affecting my patella. Think this is why it has taken so long.
Have been building up distance very gradually. Did a 5-mile run outside last night and knee is a bit stiff with mild discomfort, but physio seems to think it's still a case of building up all the muscles surrounding the knee.
Interestingly, I only tend to get discomfort now if I'm sitting for long periods of time.