Otto,
It is unclear if 1) you are trying to create the dataset directly on the CD (which will give you a write error) or 2) if your different runs are in different directories. I recommend for the purpose of converting files that you copy the DICOMs to your hard drive. Then if your DICOM files are all in one directory, you will need to sort them into one directory per sequence. Fortunately there is an AFNI tool for that (@move.to.series.dirs).
Once you have both write permission and DICOMs sorted into separate directories, Dimon should be happy to convert the files.
If not, please post the full output of Dimon.
-Peter
Edited 1 time(s). Last edit at 07/17/2013 10:28PM by Peter Molfese.