[PLEASE HELP!] Reproduceable crash when laucnhing any modpack

[Beystorm]

Launcher Version: Build 240

Operating System: Windows 8 64-Bit

Java Version: Version 7, build 21

Antivirus Program: avast! Antivirus Basic

Description of Problem:

I updated to windows 8 because I switched to a newer PC, and when I tried launching any modpack installed in the Techniclauncher, all I got was a white screenwhere Minecraft worked fine. I tried reinstalling Java and my Graphics card drivers were up to date, but the problem still persisted. I tried to launch several modpacks a few updates later, but I still got nothing. But Forge loaded. So I reinstalled the launcher, I also reinstalled Minecraft, but nothing worked. I tried several times this update, but it still doesnt work. I really want to play this game, and I wonder why this problem cant be solved. I see many peole with this problem.

Error Messages:

No message

Error Log:

To long. The important part: SEVERE: Unable to load minecraft versions from http://www.technicpack.net/api/minecraft

[Maxis010]

Check your firewall to ensure the launcher is cleared

Also try running as Admin

[Beystorm]

Check your firewall to ensure the launcher is cleared

Also try running as Admin

Thanks, but I tried both!

[Maxis010]

Well post the full log then, it can't be "Too Long", Code tags compress the log and all we know is you can't load the api, no idea why

[Yindar]

Clear the Cache files and try. Also if the launcher loads up, and lets you launch a pack, it could be a config issue with the pack.

[Beystorm]

SEVERE: Unable to load minecraft versions from http://www.technicpack.net/api/minecraft

org.spoutcraft.launcher.exceptions.RestfulAPIException: Timed out accessing URL [http://www.technicpack.net/api/minecraft]

at org.spoutcraft.launcher.technic.rest.RestAPI.getMinecraftVersions(RestAPI.java:339)

at org.spoutcraft.launcher.technic.rest.RestAPI.<init>(RestAPI.java:88)

at org.spoutcraft.launcher.technic.rest.RestAPI.getDefault(RestAPI.java:118)

at org.spoutcraft.launcher.technic.rest.RestAPI.getDefaults(RestAPI.java:108)

at org.spoutcraft.launcher.technic.PackMap$1.run(PackMap.java:196)

Caused by: java.net.SocketTimeoutException: Read timed out

at java.net.SocketInputStream.socketRead0(Native Method)

at java.net.SocketInputStream.read(Unknown Source)

at java.net.SocketInputStream.read(Unknown Source)

at java.io.BufferedInputStream.fill(Unknown Source)

at java.io.BufferedInputStream.read1(Unknown Source)

at java.io.BufferedInputStream.read(Unknown Source)

at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source)

at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)

at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)

at org.spoutcraft.launcher.technic.rest.RestAPI.getMinecraftVersions(RestAPI.java:328)

[Beystorm]

Clear the Cache files and try. Also if the launcher loads up, and lets you launch a pack, it could be a config issue with the pack.

How can I do that?