Ensure camera-files located within the track's data-folder are name-sequenced in order, like:
cameras.ini
cameras_1.ini
cameras_2.ini
cameras_3.ini
cameras_4.ini
cameras_5.ini
etc...
Generally ,
@DaBaeda creates cams with existing-cameras in mind, and are named to follow the last sequenced camera-number... So if you have removed some of the existing cameras, and placed some new ones, these now may be out-of-sequence.
If this looks like your situation, then just rename the existing files like shown above... commencing with cameras.ini and so forth.
PS. Just in case, a reminder to check and ensure camera-files have been placed in the correct track-folder.