Hello, If you are playing with the relaxation dispersion branch of relax, are having problems in compiling the C modules using scons, and have not collected full exponential curve data sets the following commit might be of interest: http://article.gmane.org/gmane.science.nmr.relax.scm/18435 It is now possible to continue without the modules being compiled. This will cause some strange errors in the future when someone does have full exponential curves, but we can deal with that when the user reports a problem. The problem should be rare enough that users should hopefully not encounter it. Regards, Edward