[Remote Desktop] Browser error

Hey guys,
I have a problem with my raspberry pi and OMV.

I installed the "remote desktop" plugin. It's possible to login, but it isn't possible to start the web browser. I have the error message "failed to execute web browser. Input output error."

Do you have any idea's or solutions?

That's it..

Thanks

OT: Do you know any ssh client for this openmediavault/remote desktop to manage another server?