Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!udel!burdvax!dave
From: dave@PRC.Unisys.COM (David Lee Matuszek)
Newsgroups: comp.sys.mac.system
Subject: Re: Okay, now I'm really pissed... (CRC errors)
Message-ID: <17736@burdvax.PRC.Unisys.COM>
Date: 24 May 91 17:52:57 GMT
References: <1991May17.014019.11207@cunixf.cc.columbia.edu> <1991May18.203743.11869@fs7.ece.cmu.edu> <1991May19.164714.4006@dartvax.dartmouth.edu>
Sender: news@PRC.Unisys.COM
Organization: Unisys Corporation, Paoli Research Center; Paoli, PA
Lines: 48

In article <1991May19.164714.4006@dartvax.dartmouth.edu> Timothy.Allen@dartmouth.edu (Timothy Allen) writes:
>In article <1991May18.203743.11869@fs7.ece.cmu.edu>
>silvus@vauxhall.ece.cmu.edu (Gregory Lee Silvus) writes:
>
>> In article <1991May17.014019.11207@cunixf.cc.columbia.edu> ta-dw30@cunixa.cc.columbia.edu writes:
>> >I can't
>> >un-binhex the files! I keep getting CRC errors. Apparently, I'm not the only
>> 
>> I had this problem w/files from sumex. The solution: By chance I tried
>> to unbinhex them using the unbinhex option in CompactPro (1.3 ?).
>> It worked!!
>
>I also had this problem once, using binhex4.  I tried binhex5 to
>unbinhex the same file and all went well.  I have no idea what it
>means.
>
>tim.allen@dartmouth.edu


When you download a file, you get mail header or news header
information at the top.  When the file is in multiple parts, you have
to concatenate the parts; you should remove all the excess header
garbage between the parts.  The various dehqxing programs will try to
skip over this garbage for you, and use slightly different algorithms
for doing so.  Sometimes they miss.

Solutions:  Try another program.  Or get in with your favorite text
editor and clean it up yourself.

BTW, note that the hqx information begins with a colon (:), ends with
a colon, and has no internal colons; all lines are exactly 64
characters wide (use Monaco 9 to check this) and contain only printing
characters, except the last line which may be short, or may have the colon
as the 65th character.

One of the programs around (I forget which) has trouble with long file
names.  The others don't.  This can also yield CRC errors.


-- Dave Matuszek (dave@prc.unisys.com)  I don't speak for my employer. --
-------------------------------------------------------------------------
|   When I was young, my family bought a color TV.  Our neigbors, who   |
| were poorer, had only a black-and-white set.  They bought a piece of  |
| cellophane, red on top, yellow in the middle, and blue on the bottom, |
| and taped it over their screen, so they could claim that they had a   |
| color TV, too.                                                        |
|   Now there's Windows 3.0.                                            |
-------------------------------------------------------------------------