Hello,
This is unfortunately a common problem with PostNuke .761 because it assumes that all blocks in modules/modulesname/pnblocks directory are pnAPI compliant wich is certainly not the case for a lot of old modules !!
One way to solve your problem would be to upgrade your pPostNuke .761 because we solved the problem since .761 release. You need to replace the includes/pnBlocks.php file on your server with this one from the PostNuke CVS :
http://cvs.post...php?rev=1.23
If you are unfamiliar with PostNuke CVS I can send you the file (please note this is an official PostNuke file only newer than the one in .761)
But I also have a new pmBOX 2.82 version with a brand new block totaly rewritten.
This block works without any change with PostNuke .760 or .761, output better html use an mp3 sound file rather than a wav one for better cross browser compatibility ... and also I corrected a security problem !
If you want to test this relaese I can mail it to you, just ask and tell me you address (you can pm it to me or mail it at vedrine __at__ vedrine __dot net because leaving it on a forum will bring you a lot of spam).