Modified .dll files can cause the software to crash during complex model exports.
One of the most frequent hurdles is the licensing service failing to recognize your credentials. If you are using a standalone or trial license and encounter a lockout: powerdesigner kuyhaa fix
I can provide a more specific technical workaround based on those details. Modified
If you are trying to resolve installation or licensing issues for PowerDesigner 16.x , here are the standard ways to manage your setup: Standard Maintenance and Fixes Repairing the Installation powerdesigner kuyhaa fix