please set valid path ... ?

I’ve been been saving audio files from the audio editor for yonks using the save as dialogue - now all of a sudden I’m getting ‘please set valid path’ to any folder I select within Documents (mac mountain lion). I can save to the desktop. The path looks fine to Document folders - anyone else come across this?

thanks,

Mark

Please show a screen shot of the message.

here…
Screen Shot 2013-06-10 at 09.28.05.png

here’s the displayed path…
Screen Shot 2013-06-10 at 09.27.52.png

There is a space at the end of one of your folder: “Lee Ross From PC”.
This is not allowed.

many thanks philippe :-/