Dear all, attached is a small bug fix for the method G_do_hoelder in the file inifcns_nstsums.cpp The method G_do_hoelder transforms the arguments as z --> 1-z. If z has an imaginary part, the sign of the imagniary part transforms as s --> -s. In the special case where z is real and >1, the transformed value is real and <0. For (transformed) real negative values of z the sign of the imaginary part is not relevant (there are no branch cuts). The code requires that in this case the sign takes the default value +1. This is now fixed. Best wishes, Stefan