I'm having a strange problem with first level estimation (working on the last version of SPM8, using matlab 7.1). Here it is:
I' m working with realigned, coregistered and smoothed images. I enter these images in a first level model, as usual. The design matrix looks good. Then I run model estimation. I check the directory of the first level and *all the images (beta, ResMS,ResI) had been calculated*. In spite of this, when I try to assets results, SPM alert me that the model has not been estimated yet. I try to "review model", and everything seem to be ok. As far as I search, the only things that didn't work is the ReselPerVoxel Image, who have only the .hdr file but not the .img.