Continuous Adobe Flash Crashing in Firefox; Updating to latest version and troubleshooting suggestions useless, why has this been part of an industry mandated "update"? It worked fine before.

Since mid-December 2015 I have been plagued with continuous Adobe Flash Crashing in Firefox; Updating to latest version and troubleshooting suggestions are useless, why has this been part of an industry mandated "update"? It worked fine before. Techies driven by the need to "improve shareholder value" by always updating and messing with what was already working truly are the "worker bees" of the devil's workshop. IE, which I never directly use, seems to be problem free with the latest version of Flash, unlike Firefox. I tried using an old version of Flash, it worked better,but was constantly asked to upgrade.