ContextCapture, merge orthophoto tiles

Hi all,

something does not work here.

I produced an orthophoto Geotiff with CC Master, it has 93 tiles. I need to merge it into one Geotiff file.

So I used CC Editor to attach rasters, and up to this step everything is ok.

I then used "merge" tool to merge the tiles, with settings "process rasters only", resolution using "existing raster", output single file in Geotiff format.

This is where I get the following error: "Operation failed: C:\_path_to_file\Ortho_Raster.tif"

What's wrong? Is there any other method to make a single Geotiff file with original resolution and SRS?

Thanks.