January 5, 2009
Many moons ago, an Adobe knowledge base article that solved an issue for older video cards, introduced the concept of the config.lua file. The config.lua file is file Lightroom will look for on startup and apply settings from within to change behaviour within Lightroom. There is no list of commands for what you can put in there available to the public, but occasionally a Lightroom Team member will suggest something that might help with a problem, or that can help debug a problem.
One such issue I’ve had in the past, and one that was mention on a forum recently, is that of getting a log of the activity of the internal FTP Client. I was keen to find out where my FTP transfers were failing in order to fix the issue. With a little help from Andy Rahn, I was able to get a log of activity going. Here’s how
Once you’ve traced the issue, you should remove the config.lua file and restart Lightroom. While this particular settings doesn’t affect performance generally, debugging settings can, so it’s wise to only use it when necessary.