Problem with instalation

[vasakorol]

Hi,

i get this error when try to install sandbox

Problem 1 - Installation request for mopa/bootstrap-sandbox-bundle dev-master -> satisfiable by mopa/bootstrap-sandbox-bundle[dev-master]. - mopa/bootstrap-sandbox-bundle dev-master requires knplabs/knp-menu-bundle 2.0.x-dev -> no matching package found.

here is my composer:

"mopa/bootstrap-bundle": "dev-master", "mopa/bootstrap-sandbox-bundle": "dev-master", "twbs/bootstrap": "dev-master",

[TELLO0815]

Hi,

the problem is still there:
Problem 1 - Installation request for mopa/bootstrap-sandbox-bundle dev-master -> satisfiable by mopa/bootstrap-sandbox-bundle[dev-master]. - mopa/bootstrap-sandbox-bundle dev-master requires knplabs/knp-menu-bundle 2.0.x-dev -> no matching package found

Is there any help?