Can't install Ati Driver 11.04

[gamer456]

I'm having a problem installing Ati Catalyst 11.04 for Ati Radeon HD 2600 XT. It always tells me "There were errors during installation" Here is the Log:

Unloading radeon module...
ERROR: Module radeon is in use
Unloading drm module...
ERROR: Module drm is in use by radeon,ttm,drm_kms_helper
[Message] Kernel Module : Trying to install a precompiled kernel module.
[Message] Kernel Module : Precompiled kernel module version mismatched.
[Message] Kernel Module : Found kernel module build environment, generating kernel module now.
AMD kernel module generator version 2.1
doing Makefile based build for kernel 2.6.x and higher
make.sh: 474: make: not found
build failed with return value 127
[Error] Kernel Module : Failed to compile kernel module - please consult readme.

Why wont it install?

[sithlord48]

Re: Can't install Ati Driver 11.04

make.sh: 474: make: not found
build failed with return value 127

your tring to compile this? if so you should install the build-essentials package.