If the ship was at fault, you would crash upon going to shipdealer - NOT upon startup. Follow normal crash proceedure *cue dresses up in flight attendant outfit*

Step 1: Delete Freelancer Folder

Step 2: Reinstall FL using disk

Step 3: Install the SDK

Step 4: Open FLMM and go to tools tab

Step 5: Click on "go to save games folder"

Step 6: Delete everything in that folder

Step 7: Activate your mod

Step 8: Go buy ship