Creating Vuforia - Area Targets failed - E57 shall contain one or more Image2D structures

Question

so i am trying to create an Area Target with the "Vuforia Area Target Generator" for Unity3d.Therefore i need a e57-file containing the scanned PointCloud. Im getting this error:

E57 processing: Validation of the E57 file failed.
 [   FAIL  ] E57 shall contain one or more Image2D structures that have either 'sphericalRepresentation' field or 'pinholeRepresentation' field. 
 [ SUCCESS ] 'pose' field in Image2D structure shall be defined. 
 [ SUCCESS ] Spherical images shall have minimal resolution of 4096x2048 and their width = 2 * height. Pinhole images shall have minimal resolution of 1024x1024 and must be square (width = height).

I know that this means there are no images (panorama or 2d images) attached !!and overlayed!! to the e57-file. But i dont know how to add them to the e57-file. I tried using CloudCompare but after some research i found out that you cant registrate images to pointclouds in CloudCompare. Does anyone know a workaround or a solution(maybe a different software) to this problem? I do have a PointCloud as e57-file and a panorama as .png.

It took me quite a while to understand where the problem is because i thought a colorized Pointcloud would be enough to create an area target.

I should add that im not using one of the supported laserscanner that vuforia lists on their website. But it should work nonetheless as mention on theirs website as well.

Any help is greatly appreciated, Moritz