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From: dchrist@inf.ethz.ch (Dan Christensen)
Newsgroups: comp.sys.mac.programmer
Subject: problem with Communications Toolbox
Keywords: connection tool, CMNew
Message-ID: <14247@neptune.inf.ethz.ch>
Date: 7 Nov 90 11:57:25 GMT
Sender: news@neptune.inf.ethz.ch
Distribution: comp
Lines: 21

I am trying to use the Connection Manager (CM) from the Macintosh
Communications Toolbox and have run into a problem.  As a first attempt
at using the CM I wrote a simple Pascal program that opens a connection
and sends some test data and this worked fine.  Then I converted the
code to Modula-2 and added it to an existing application written in
Modula-2.  This required converting the Pascal interface files to
M2 .def files, which was fairly straightforward.  The problem I
am having is that CMNew is sometimes returning NIL.  The first
time I run the application after restarting the machine, it works
fine.  Then later attempts usually (but not always) fail.  I check
the free memory on both the application and the system heaps and
both have plenty.  In case it matters, I am running on a Mac IIx
using MPW.  The problem occurs with both the Finder and the  
Multifinder.

Any ideas?  Please respond by e-mail and I'll e-mail or post a summary
if requested.

Thanks.

Dan