Language Tool error?

First I have to thank you for an incredible piece of software. I set up a professional-looking maintenance system for our web site in less time than it took to create the database! Excellent job.
The system has been working fine for several weeks, but now we suddenly started getting the following error message:
Parse error: syntax error, unexpected '&' in \\NAWINFS04\home\users\web\b2112\rh.greyhound\dataface\Dataface\LanguageTool.php on line 150
I don't know what has changed to cause this error to occur, so any help you can give would be most welcome. As far as I'm aware, we're not even using any of the language functionality (not intentionally, anyway).
Thanks.
The system has been working fine for several weeks, but now we suddenly started getting the following error message:
Parse error: syntax error, unexpected '&' in \\NAWINFS04\home\users\web\b2112\rh.greyhound\dataface\Dataface\LanguageTool.php on line 150
I don't know what has changed to cause this error to occur, so any help you can give would be most welcome. As far as I'm aware, we're not even using any of the language functionality (not intentionally, anyway).
Thanks.