Error 3315 Message

[ddouglass]

If you don't have the demo still installed then you can delete those files. If it is still installed the uninstall it first then delete what is left.
If you have copied all your kma files from the C: drive to the external then you should be able to delete those too and just rebuild the database using the external drive folder.
The 3315 error means those files are corrupt. Sometimes this happens if one of the fields is too long. The only way to recover those files is to re-import them.