I figured out the problem.<br><br>It seems that spm_existfile only returns that a file exists if it exists AND the file can be read, so it returns 0 if the read permissions are incorrect.<br><br>exist says that a file exists whether or not it can be read.<br>

<br clear="all">-----<br>Darren Gitelman<br>
<br><br><div class="gmail_quote">On Tue, May 5, 2009 at 5:41 PM, Darren Gitelman <span dir="ltr">&lt;<a href="mailto:[log in to unmask]"><a href="/cgi-bin/wa-jisc.exe?LOGON=A3%3Dind0905%26L%3DSPM%26E%3Dquoted-printable%26P%3D417847%26B%3D--001485f87bbca6746a0469322815%26T%3Dtext%252Fhtml%3B%2520charset%3DISO-8859-1%26pending%3D" target="_parent" >[log in to unmask]</a></a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">

Hi<br><br>spm_existfile fails to find a file with the following name /usr/local/4dfp/z_ROI/L_V1_-7.2_-82.5_-1.9.4dfp.img<br><br>however, using exist(&#39;/usr/local/4dfp/z_ROI/L_V1_-7.2_-82.5_-1.9.4dfp.img&#39;)<br><br>or exist(&#39;/usr/local/4dfp/z_ROI/L_V1_-7.2_-82.5_-1.9.4dfp.img&#39;,&#39;file&#39;)<br>


<br>correctly finds the file.<br><br clear="all">-----<br><font color="#888888">Darren Gitelman<br>
</font></blockquote></div><br>