It's not that tough ... usually.
Right now, we're still working through what addons built for the last version will work with this one. Taking a look at the main forums,
specifically Addons, over on orbitersim.com should help. It is possible that that version of the shuttle hasn't made the complete transition to
the new version yet (don't know for sure, I like flitting through the asteroids and the shuttle don't go there).
To try and find a solution for yourself, take a look at the new scenario files versus the same scenario in the last version. Same thing applies
with the configuration files. If any addon that you are trying has a base that does not conform with the new configuration, CTD. There is lots
to look at, but your main fix tool is your favourite text editor.
Other than that, patience is. New version hasn't been out a week yet. Could take a month until all of the addon issues are sorted out.