I thought they tried that... if that dosent work, clear the cache by pressing options and clear cache, then redownload. OR you could just select the CORRECT version like rygury did... :(
Go to here if you have a PC.
C:\Users\Owner\AppData\Roaming\.techniclauncher\technicssp
Replace "owner" with whatever your account name is when going there.
Delete IDresolver.txt and IDstatus.txt
Doing that fixed it for me because it had to reload the settings and make a fresh batch of info.