user5420: When I try to open this project, Final Cut Pro 7.0.3 running on Mavericks pops up an error box that says "File Error: Wrong Type."
I've fixed this in the past using the Project Repair tool in Digital Rebellion's great Pro Maintenance set of tools but I'd like to find a free option if possible.
I've seen people discuss setting the file type and creator, possibly using a command line tool, SetFile, that is part of the OS X developer tools but none of them seemed to have complete instructions and there were a number of claims of it not working anyway.

user5420: After installing SetFile (instructions below), go to terminal and execute this command:
setfile -c "KeyG" -t "FCPF" INSERT_FILENAME_HERE

According to SetFile's man page, "-c" sets the creator and "-t" sets the type.
I found what the type and creator should be set to in Peppy's second post on this thread: http://hintsforums.macworld.com/archive/index.php/t-16983.html
SetFile can be installed as part of the Xcode Command Line Tools by opening Terminal and typing:
xcode-select --install

But if I recall that sometimes fails so you might also try downloading it from the Apple Developer site.

5420: <p>When I try to open this project, Final Cut Pro 7.0.3 running on Mavericks pops up an error box that says "File Error: Wrong Type."</p>

<p>I've fixed this in the past using the Project Repair tool in Digital Rebellion's great <a href="http://www.digitalrebellion.com/promaintenance/" rel="nofollow">Pro Maintenance</a> set of tools but I'd like to find a free option if possible.</p>

<p>I've seen people discuss setting the file type and creator, possibly using a command line tool, SetFile, that is part of the OS X developer tools but none of them seemed to have complete instructions and there were a number of claims of it not working anyway.</p>
 5420: <p>After installing SetFile (instructions below), go to terminal and execute this command:</p>
<pre><code>setfile -c &quot;KeyG&quot; -t &quot;FCPF&quot; INSERT_FILENAME_HERE
</code></pre>
<p>According to SetFile's man page, &quot;-c&quot; sets the creator and &quot;-t&quot; sets the type.</p>
<p>I found what the type and creator should be set to in Peppy's second post on this thread: <a href="http://hintsforums.macworld.com/archive/index.php/t-16983.html" rel="nofollow noreferrer">http://hintsforums.macworld.com/archive/index.php/t-16983.html</a></p>
<p>SetFile can be installed as part of the Xcode Command Line Tools by opening Terminal and typing:</p>
<pre><code>xcode-select --install
</code></pre>
<p>But if I recall that sometimes fails so you might also try downloading it from the <a href="https://developer.apple.com/downloads/index.action" rel="nofollow noreferrer">Apple Developer</a> site.</p>
