I’ve been grappling with a mystery lately regarding the failure of my flashlog.txt file. As you may know, you can direct all your Flash Pro or Flash Builder trace output to also go to this file by setting a couple of flags in mm.cfg. I had made those settings but I wasn’t getting anything in my log file. It had worked for me previously so I was perplexed. Among other things, I searched and posted on the Adobe Forums. Happily, today the answer was revealed on the forum.
It turns out that, for some reason, Photoshop has the file locked! Why Photoshop should be fiddling with the file is beyond me but if you just exit Photoshop trace output resumes to flashlog.txt. This problem also prevented trace output in the Flashbug plug-in for Firebug/Firefox. Same solution works there, too.
Read more about the bug at ihaveinternet.com.
