Thanks for the suggestion. Logging is in the long term plans but no ETA yet. Your idea of logging to a text file would be pretty easy to implement. For various reasons I wouldn't do logging this way in the main product, but if you have immediate requirements it might be sufficient.
If you wish to hire me to provide a customized build for you,
contact me and I will give you an estimate.
Roger Martin
Creator and Lead Developer of Gallery Server Pro