Do you have the Orthanc log generated when you try to do that ? You might need to use verbose logging. Probably related to some sort of tag issue.
I tried and they uploaded, but I get some errors, and it doesn't display in the viewer.
W: DcmItem: Length of element (0000,3331) is odd
E: DcmElement: Unknown Tag & Data (0000,3331) larger (858861879) than remaining bytes (4127943) in file, premature end of stream
W: DcmItem: Dataset not in ascending tag order, at element (0000,3331)
E0809 16:40:04.470219 OrthancException.h:76] Bad file format: Cannot parse an invalid DICOM file (size: 4127979 bytes)
W: DcmItem: Length of element (0000,3331) is odd
E: DcmElement: Unknown Tag & Data (0000,3331) larger (858861879) than remaining bytes (4127943) in file, premature end of stream
W: DcmItem: Dataset not in ascending tag order, at element (0000,3331)
E0809 16:40:04.477147 OrthancException.h:76] Bad file format: Cannot parse an invalid DICOM file (size: 4127979 bytes)
E0809 16:41:48.342432 OrthancException.h:76] Unable to order the slices of the series: Unable to order the slices of series 8b910583-708fcf58-e400c6d6-92b52d2d-106b3d52
E0809 16:41:48.342538 PluginsManager.cpp:197] Exception while invoking plugin service 3010: Unable to order the slices of the series
E0809 16:41:48.342605 PluginsManager.cpp:164] (SeriesController) Orthanc::OrthancException 7/404 Accessing an inexistent item