write to network drive from linux system

I have mounted a network drive through nautilus, that means the path looks like this:

/run/user/1000/gvfs/smb-share:server=SOME.SERVER.URL,share=SOMESHARE/PATH/ON/NETWORK/DRIVE

this is fine for the most part, I can cd around in matlab, I create files, I can read files.

I cannot However write to files, as i get an error:

"The filename specified was either not found on the MATLAB path or it contains unsupported characters."

Why do I get this error only when writing to a file (and not while reading/creating)?

Is there any way around this? I can see the problem with having the symbols "=:.," in the path, but I don't know any way around this, so I must learn to write instead.