Bitbridge works very well but some 32 bit plugins don't like it. You don't need to stop all use of these plugins just the one that was giving you trouble. Than you can try Jbridge for that. Sonar supports Jbridge so you shouldn't deprive yourself. I am as fully 64 bit as I can get. I will not buy any plugin that is not 64 bit. But I do have a few that I fine very useful and they give me no trouble under Bitbridge.