Industrial Age The Turning Version 1.2.0

Hello. Today I accepted the update (just thinking it was just another update) but when the process was done, I could not play it. When I realized, the game jumped from 1.6.4 to 1.7.0 without me knowing about this HUGE change. All my saves, my world, my progress is gone, it is saved in my server, but lost because I have no access to it. How can I use the 1.6.4 version again, or please advise if there will be no problems merging the old save file with the new version. So far when I go to launcher app and click on Modpack Options, and the version to choose from is only the 9.0.2... also, when I go to the Launcher Options, and when I click on Java Settings, it says JAVA VERSION, 1.7.0_72 64-Bit, when click to select a different offer it does not show any other one. Next to it says "Find Another Version" but I have to look for it on the OS. Now, I just downloaded and installed the Forge 1.6.4 already, and nothing happens. PLEASE... I need help to solve this problem. I have been working on my world for months now. I just cannot loose it. Any advise is more than appreciated. Thanks.

hello, I have a problem with the mod doggy talent, my game crash when I use the medallion to tell him to attack, and I wonder if there would have a solution to the problem? and also I can not find no dark iron ore mod factorization to find an idea? Thank you for this good full modpack My config: I7 [email protected] 16 Gb Ram MSI GTX 980 4Ghz Java 7 UDPATE 71 Java 7 Update 71 64Bit 3Gb Ram allocated in the Launcher PS: Sorry I'm french and I translated with google translation