Hi Cody, Since posting this, I have been working with a ESRI South African technician to address this issue. After trouble shooting for some time (eventually the issue was sent to ESRI USA), it seems that this issue is related to hardware. Or that's the answer I received from ESRI. Some hardware combinations will produce a "hidden error" that will cause a 9999 error at a later stage. During first block adjustment, no solution points are created, which is the issue. I was using ArcGIS Pro 2.3.2. However, since the new release (2.4.1) I cant even create a OrthoMapping Workspace. ArcGIS Pro crashes when I load my drone Imagery into the workspace. Also, images taken from different drone cameras produce different errors! Regards, Jurie
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