filezilla cannot run, what's wrong?

Dear all,

I can install Filezilla properly from the software centre,
but cannot run it, what's wrong?

The software centre of ZorinOS11 shows that it is "filezilla 3.12.0.2-1ubuntu2.1"
-> I click on the corresponding zorin menu item
-> but just nothing happened!
-> I tried to run it from the terminal by entering "sudo filezilla",
but the same result!
-> so what's wrong?

In addtions, can you suggest some good alternatives of Filezilla?

Thanks for any kind of help!

Alternatives here:

http://alternativeto.net/software/filez ... form=linux