[Could not reserve enough space for object heap]

I Have 4 G in my computer but if i type 2048M it says not enough RAM

[Launcher Doesn't Work]

Nope nothing helped

[Launcher Doesn't Work]

This is a problem with Tekkit by the sounds. Post in the right section next time.

it doesn't do it only on tekkit it does it on any modpack but i just said tekkit because i play that the most

[Launcher Doesn't Work]

Turn off AVG and redownload

how do i turn off AVG?

[Launcher Doesn't Work]

Launcher Version: 3.1.3

Operating System: Windows XP Professional

Java Version: 1.7

Antivirus Program: AVG 2013

Description of Problem:

When i want to open tekkit than i get a white screen. I tried re-downloading but still the same problem.

PLEASE HELP!!!

Error Messages:

no messages

Error Log: