Subgit configure error branch fetch error

Using Subgit, while configuring i got error “svn: E160013: Working copy path ?branches/FITS: NetBoxDriver - Introducing a help thread? does not exist in the repository”.
Looks like branch is not appropriate. I renamed branch “FITS: NetBoxDriver” to “FITS_NetBoxDriver” as there was space between letters. Then i tried to configured, but still same error. Is there anything i am missing. what else can i do?