Bad filename chars in 'Name of new export configuration'

'Name of new export configuration:' accepts filename-illegal chars but then barfs e.g.

File "C:\Documents and Settings\Chris\Application Data\Mp3tag\export' test' .mte"
cannot be created.

I suggest it would be better for it to work like Action groups | New i.e. strip any illegal chars. Or even better, refuse them at input.

Done.

strips any illegal chars
Done

Confirmed.. but if the result equals an existing filename, the dialog box refuses to close, with no explanation. I suggest a dialog like Action Groups' : "An entry with this name already exists. Please use another name."

By the way, when the same happens on Actions Groups | New, mp3tag doesn't notice, and the list gets two entries with the same name... referring to the same file!