I have just upgraded to ArcGIS 10.1 from version 10.0. I am trying to add the SEXTANTE tools to ArcToolbox. I have followed all the instructions from the SEXTANTE website. I have also tried the instructions here and here.
No matter what I do, I keep getting little red crosses when I try to run any of the tools in SEXTANTE.

Note, following the instructions in the above links worked for me in version 10.0 but I just can't seem to get it to work in 10.1.
Does anyone know what might be going on? Are other people having this issue?
Thanks.