RC asked me to report this, so I shall! 
I was just trying to render a shaded orthophoto of a large-ish model.
There might have been a windows-standby in between but it’s rather unlikely.
Hi Götz,
by ‘shaded orthophoto’ you mean an orthographic projection of an untextured model?
Hi lubenko,
yes, exactly!
Hi,
I´m getting the same bug, although I am trying to render an ortho projection of a textured model in High detail. Same dialog as above, i´m adding a screenshot as well. Had no problem rendering the orthos using a Normal detail model, however, I wanted to use the High detail, so that I could see the modelled ladder hooks in the ortho, which are not that well modelled in the Normal detail.
Any idea? Thanks in advance!
Hello,
can you please share the Texturing parameters of the selected model? You can find it in the 1Ds view in the Selected model(s) table once you select specific model.
Did you have any problems with the texturing of this model? What was your texturing and unwrap parameters?
Hi,
I’ve just had the same problem too, trying to generate orthos of a textured hybrid model at Normal resolution. Screen shows the same message as included above by Pavel. There were no problems texturing the model as far as I could see, default parameters were used. Haven’t encountered this problem before.
Log file says:
RealityCapture 1.0.3.3939 RC (c) Capturing Reality s.r.o.
Using 12 CPU cores
Added 1485 images
Loading Project completed in 0.308 seconds
Processing failed: Invalid item index. Please report the issue to the forum.
[0x3203\0x3200\0x5054]
[0x3203\0x3200\0x5054]
Orthographic Projection Calculation in Progress failed after 1.723 seconds
but not sure how much use that is! Although this is clearly after file was re-opened I had several previous failures regardless of the way the ortho-projection was aligned.
Any help would be much appreciated!
Hello Jon,
can you please send a screenshot of the Texturing report for the selected model? This error can occur when there is no texture present from which the ortho projection can be generated or there is something wrong with the texture.
Also, would it be possible to share the project file and project folder (only with the model that is causing problems) with us so that we can test it on our side? Thanks.