Since we installed 4.007 the spell checker has stopped working.  Then we ask for a spell check we have two checking windows pop up,  The second is larger than the first, and appears to process the documents contents correctly.   No spell check complete ever occurs and the only option is to cancel.  Of course the changes (corrections requested)  are not made to the document.  Also cancel closes the large spell check window - a second cancel is required on the smaller window to return to the editor with the uncorrected document.