Hi all, I have downloaded both Octave 4.4.1 disk image & 5.2.0 source code. After installing 4.4.1, and linking gretl’s path to "Octave 4.4.1/⁨Contents⁩/MacOS/applet", I was not able to run the example from the gretl documentation in Chapter 41: ——————————————————————————— open data4-1 matrix m = { dataset } mwrite(m, "gretl.mat", 1) foreign language=Octave gmat = gretl_loadmat("gretl.mat") end foreign ————————————————————————— Once I run this, the Octave opens up with a command window, and nothing else is going on. The spinning wheal just keeps on spinning in gretl. Only after I quit Octave will gretl come to life with a script output saying nothing interesting: —————————————————————————— gretl version 2020d Current session: 2020-09-29 18:20 ? open data4-1 Read datafile /Applications/Gretl.app/Contents/Resources/share/gretl/data/ramanathan/data4-1.gdt periodicity: 1, maxobs: 14 observations range: 1 to 14 Listing 5 variables: 0) const 1) price 2) sqft 3) bedrms 4) baths ? matrix m = { dataset } Generated matrix m ? mwrite(m, "gretl.mat", 1) ? foreign language=Octave ? gmat = gretl_loadmat("gretl.mat") ? end foreign ——————————————————————————— What am I doing wrong? Thanks in advance for your help, Fred