virtualbox don't run

[DJIENTCHEU Yannick Michel]

Hi, i have an Ubuntu 10.04 When i do this : VBoxManage startvm "WINDEV14" , in commande line i receive

/usr/lib/virtualbox/VBoxManage: /usr/local/zend/lib/libcurl.so.4: no version information available (required by /usr/lib/virtualbox/VBoxRT.so)
Sun VirtualBox Command Line Management Interface Version 3.1.6_OSE
(C) 2005-2010 Sun Microsystems, Inc.
All rights reserved.

/usr/lib/virtualbox/VBoxXPCOMIPCD: /usr/local/zend/lib/libcurl.so.4: no version information available (required by /usr/lib/virtualbox/VBoxRT.so)
/usr/lib/virtualbox/VBoxSVC: /usr/local/zend/lib/libcurl.so.4: no version information available (required by /usr/lib/virtualbox/VBoxRT.so)
Waiting for the remote session to open...
ERROR: Virtual machine 'WINDEV14' has terminated unexpectedly during startup
Details: code NS_ERROR_FAILURE (0x80004005), component Machine, interface IMachine, callee <NULL>

[DJIENTCHEU Yannick Michel (djientcheu2001)]

Thanks you by advance for your help; i have a lot of my works into my virtual machine. Have a good day