In the SKMC Launcher, click more options and then check the box next to "Launch With Console". After the client crashes, copy the console output and put it up on pastebin. I might be able to figure out what the problem is.
Unzip that and put the files in .skcraftalice/.minecraft/bin. Under the natives folder, grab the files out of the 'windows' folder and put them in .skcraftalice/.minecraft/bin/natives.
If that doesn't fix it, force a game update and try logging into Alice again to reset the lwjgl files.
Honestly it seems like this error is probably really generic and could be caused by any number of things. Some reports suggest it's an issue with certain blocks in the world and others suggest it's a client-side mod issue.
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