[Perlfect-search] Error when starting indexer.pl

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Hi!

If got a problem when starting the indexer.pl: The following error
message is posted (I have to start the indexer.pl via browser):

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Perlfect Search 3.20 indexer.pl

Note: Do not call this script again while this instance is not finished.

Using DB_File...
Checking for old temp files...
Content-type: text/html

<H1>Software error:</H1>
<PRE>Cannot open #adress of my cgi-hoster#/cgi-bin/search-3.20/data/inv_index_tmp: No such file or directory at indexer.pl line 103.
</PRE>

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Thanks for help!

Jan