Rails debugger - Hitting F5 to "step into" prompts for an action selection

{html}<div><p>Assigned to <a href=
"http://aptanastudio.tenderapp.com/discussions/problems/1072-sync-problem">
Tender discussion #1072</a>. As reported in Tender:</p>
<blockquote>
<p>Hello,</p>
<p>I've a problem with Aptana since a long time.</p>
<p>When I download a file, it often does : "Resource is out of sync
with the file system : 'blabla.php'? Press 'F5' or select File >
Refresh to refresh the file." So I have to download it again to
have the possibility to edit the file. Apparently it's like the
file is corrupted.</p>
<p>Can you do something? Cheers!</p>
</blockquote></div>{html}