did you update to the 11.26 version or the new 11.30 beta version? In this last scenario, there might be some new or changed files in X-Plane that your add-ons are not compatible with, and you might have to ask the add-on developer about it. This is all I can think of if, like you said, X-Plane crashes as you load your add-ons. Should the beta version be the reason for your crashes, I am afraid you might have to do a clean install, and then only update to the latest stable version, unless the add-on developer issues a fix for the new beta. But it is my best guess, and if your add-ons work out of the box with the stable version (11.26) then this is likely the cause.