I have included some modifications since the last time you used this function. I have also done some checks combining as.s2dv_cube function (from branch develop-as.s2dv) and CST_SaveExp. Maybe, you would like to check if the data can be loaded with CST_Load after saving it with CST_SaveExp.
I send you attached the script with some examples I have run at BSC. If you want to use startR, you should install the version 0.1.3 in Gitlab (https://earth.bsc.es/gitlab/es/startR). The easiest way is to run devtools::install_git('https://earth.bsc.es/gitlab/es/startR', branch = 'master')
Let me know your opinion and many thanks for your help!
Núria