After installing Wilco's 737PIC, I lost my "add-on" tab under the menu choses in FSX. After doing some research online and figuring out there isn't much help out there, I had a "hunch" to re-install GSX and that fixed the problem...sort of. The installer for GSX found the corrupted dll and created a new one, however, now only the add-on manager works. I don't have my Level-D, PMDG, Captain Sim, etc options like I did before. My question is simple. If the installer for GSX found a corrupted file/line, why can't I find that line and fix it. Does anyone have a solution? Thank you all for your time! Cheers