Wierd awk error (2nd try)

[Torben M. Hansen]

Hi All

Sorry about the last mail. I don't know what happened. I hope this is 
readable.

I'm trying extract some data from a file using awk. However I get errors that
I don't understand.

My awk file looks like
/= DATASET/     { ds = $3; }
/xangst/        {if (ds == 1) {ln = 1; print $2,$3,$4 }}
{if ((ln > 0) && (ln < 61))     {if (ln!=1) {print $1,$2,$3} ln+=1 }}

and I execute it with
awk -f crds.awk c60*.out
but get the following error
awk: crds.awk:3: /x
awk: crds.awk:3:  ^ invalid char '' in expression

If I execute it from command line like
awk '/= DATASET / {ds=$3} /xangst/ {if (ds==1) {ln=1; print $2,$3,$4 }}\
  {if ((ln > 0) && (ln < 61)) {if (ln!=1) {print $1,$2,$3} ln+=1 }}'
 c60*.out\

 > c60_d4.crd

I don't get any error.
Does anyone know a good tutorial for awk? According the one I using
http://www.vectorsite.net/tsawk1.html#m3 this seems OK.

Thanks
Torben