Your PATH and @INC are irrelevant. open relies only on the path information you pass to it. However, since you're using PerlApp, you need to use a utility function to extract the file from the EXE. Something like this:
my $filename = PerlApp::extract_bound_file($datafile); open my $fh, ">$filename";
I'm not sure why you're writing to the file, though, because it's really only a temporary file. You may want to rethink that. Files bundled into the EXE are designed for reading - changes you make won't end up back in the EXE. Instead, the temporary file will be changed.

There's more information here.

Are you sure it was a book? Are you sure it wasn't.....nothing?

In reply to Re: Writing to a packaged file with PerlApp by batkins
in thread Writing to a packaged file with PerlApp by perl_seeker

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.