I suggest downloading the ISO from the BW home page. Make a complete backup of your current BW folder. Close BW, disable antivirus programs, turn off any unnecessary services, and then reboot. Close all other programs. Use the ISO to uninstall BW. Reboot the system and use the ISO to make a new installation of BW. Reboot the system again and then update BW to the current version and then
auto clicker word unscrambler jumble solver reboot the system a final time. Since you are having the crash when you search I would not even try searching or using BW at all except to update it until after the final reboot. Usually this fixes the problem.
I have helped a number of BW users since BW closed with similar problems. Sometimes even the procedure above did not work. What did work then was to uninstall BW using the ISO, then completely delete the BW folder and then search the registry and delete all entries that were part of the BW program. Then reboot the system again and install BW again with AV and unnecessary service off and all other programs closed.
One other thing that seemed to help at least once was to extract the ISO to a folder and run setup.exe from that folder. I would also run BWCheckDisc.exe first from that folder. That would confirm that the ISO was successfully downloaded and that the extraction was also successful.