[x264]                 improved error handling


git-svn-id: http://svn.code.sf.net/p/megui/code@2483 a21b8521-4df1-4ed3-b48c-cff5bc73dcb3
[video preview]        if video preview is set to "always on top" some GUI elements were hidden (bug #754)


git-svn-id: http://svn.code.sf.net/p/megui/code@2484 a21b8521-4df1-4ed3-b48c-cff5bc73dcb3