I receive error while installing Ajax Made Simple

[amin30b]

Hello
When I want to install Ajax Made Simple module from Module manager , I receive this error :

Error!

Checksum error. This probably indicates a corrupt file, either when it was uploaded to the repository, or a problem in transit down to your machine.
expected: 8f2905901515ba9fa25e02e985077269 and got b9a61116b32e0adca9db22227476a09b

Could I correct it ?

[marties]

try to upload your modules via ftp (in /modules) instead of Module Manager