I just tried moving the files from ".techniclauncher\technicssp" to ".minecraft" and putting the files form modpack.jar into minecraft.jar.. and it still closes at the Mojang screen, which means that this is not really a problem with the launcher, but the files/mods.. According to the logs however it seems to be some kind of java problem, even though I have the latest update.. Is Technic incompatible with java 7u5? Since I see it is 7u4 that the site links to.
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Sorry about the double post. Would edit it in now, but it seems that would leave me with an empty message since I cant seem to see a "remove post" feature