Game freezes

[Former user]

When I install the NEI_plugins, opening NEI causes the game to freeze. NEI works fine without the plugin.

MC 1.5.2, NEI 1.5.2.25, Core 0.8.6.1 and Plugins 1.0.9.3. Wish I had a crash to show you but I have to end task on Java to get out of the freeze.