Execute operation failure

[154866] backup embedded.b2qt.qdb operation: Execute
[154866]        - arguments: /home/sapiippo/Qtasd/Tools/qdb/bin/qdb, server, &, UNDOEXECUTE, {0,1}, /home/sapiippo/Qtasd/Tools/qdb/bin/qdb, stop-server
[154866] Done
[154866] perform embedded.b2qt.qdb operation: Execute
[154866]        - arguments: /home/sapiippo/Qtasd/Tools/qdb/bin/qdb, server, &, UNDOEXECUTE, {0,1}, /home/sapiippo/Qtasd/Tools/qdb/bin/qdb, stop-server
[154884] Done
[154885] Operation \"Execute\" with arguments \"@TargetDir@/Tools/qdb/bin/qdb; server; &; UNDOEXECUTE; {0,1}; @TargetDir@/Tools/qdb/bin/qdb; stop-server\" failed: 
[154885] installationErrorWithCancel : Installer Error : Error during installation process (embedded.b2qt.qdb):
 Retry|Ignore|Cancel 

 Component.prototype.createOperations = function()
{
    component.createOperations();    var extension = "";
    if (installer.value("os") == "win")
        extension = ".exe";    var qdb = "@TargetDir@" + "%TARGET_INSTALL_DIR%" + "bin/qdb" + extension;
    var settingsFile = installer.value("QtCreatorInstallerSettingsFile");    component.addOperation("Settings", "path="+settingsFile, "method=set", "key=Boot2Qt/qdbFilePath", "value=" + qdb);
    component.addOperation("Settings", "path="+settingsFile, "method=add_array_value", "key=Plugins/ForceEnabled", "value=Boot2QtQdb");
    component.addOperation("Settings", "path="+settingsFile, "method=add_array_value", "key=Plugins/ForceEnabled", "value=Boot2Qt");    component.addOperation("Execute", qdb, "server", "&", "UNDOEXECUTE", "{0,1}", qdb, "stop-server");
}