I also had P3D crash after installing an AeroSoft Airport, EHAM. I couldn't fix it. By chance I read in the Estonia Migration Tool manual that when having issues after an install to stop migration tool then restart it. I did so and after reinitializing received a messsage from the migration tool that it had found an incompatible file, the EHAM traffic dll and removed it. That cured the problem and EHAM in all its detail works fine.