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From: Mike_Dustan@ucs.sfu.ca (Mike Dustan)
Newsgroups: comp.sys.mac.hypercard
Subject: Re: Help: visual effect doesn't work
Message-ID: <1991Feb28.231002.29894@newsserver.sfu.ca>
Date: 28 Feb 91 23:10:02 GMT
References: <39650@cup.portal.com>
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Organization: Simon Fraser University
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In article <39650@cup.portal.com> ISW@cup.portal.com (Isaac S Wingfield) 
writes:
> I just realized that none of the "visual effect" card transitions
> work on my Mac any more (I know they did, once).
It's almost a sure bet that you've set your screen to 2 or more gray 
levels or to colour. Visual effects only work if your screen is set to 
black and white.

Hope this helps.

Mike