On 17/08/2005, at 22.52, Jon Hart wrote:
[...] so I guess that the upgrade to v16 made that an error [...]
It was strange that it was only happening in one specific file [...]
Generally bad things in the grammars are reported when they are seen, i.e. during parsing. So whether or not your grammar change caused a problem (and lead to a beep) would rely on the file content.