visual studio 2010 intellisense won't auto-pop after period

I can't get VS2010 to auto-pop after i type a period.

I'm programming in C#, and i've tried playing with开发者_开发技巧 the settings under Tools > TextEditor > C# > Intellisense, with no luck.

I've also tried 100 different ways to google it with no luck.

Verify that you have Tools > Options > Text Editor > C# --> Auto list members checked.

Does ctrl-space force it to appear?

Also, If you haven't already, try resetting your IDE back to default and uninstalling/disabling extensions

I'm assuming you're using VS2010 RTM not a Beta or RC? The Beta an RC had problems with intellisense