Which is the "parser plugin for encoding trig"?

[Peter Ulrich Kruppa]

Hi,

some ports on my 9.1-STABLE fail with this message:
	
	Could not find parser plugin for encoding trig

I found some mails mentioning this problem in the archives and tried to
reinstall sysutils/raptor2 - as recommended - but the error remains the
same.

Any ideas?

Greetings

Peter