Fun today. I was trying to use
FirebirdClientFactory from FirebirdClient installed in GAC. Because it was used globally I was not editing
machine.config. I went to
Framework etc. directory and modified
machine.config. And ... and it still wasn’t working. Fast forward, I spent maybe an hour trying to figure out what’s wrong. I was hopeless. Everything seemed fine. Randomly cd-ing through directories and thinking what I’m missing, I realized I didn’t modified
Framework64. Stupid mistake.
Sure after I corrected myself everything started working. Hope my story will save you time.