AFAIK I have the correct 'custom.dic' and 'MSSP3EN.LEX' in the appropriate 'proof' folder. If I try to spellcheck, I get 'The custom dictionary C:\blah blah blah (I cannot read the whole path) is not available'. Multiple clicking on 'OK' eventually runs the correct language spell check and both the standard and custom dict are used.
I have trawled the internet and all I can find is a reference to this happening with the Portugese dict. Much fiddling with 'language' and 'spelling and grammar' settings and no changes. I've tried saving custom.dic in unicode as one site suggested.
Any pointers appreciated.