I had a guy install a DSP-30 for me awhile back, but now I need to get into the settings and change some settings (increase gain). But every time I load up the Signal Manager Software, it says something like "the configuration file corresponding to what is active in the dsp cannot be found" and gives me an option to search for it. So, do I have to have the original config file that guy made? I would think it would be able to get the settings/configuration of the preset Im using.

Thanks!

Yes, you need the original file. You can't extract it from the DSP-30 because all that's there is the set of compiled DSP instructions.