Hi, I just came back from a two weeks vacation and had to find out that all my scripts no longer work. It seems like "mread" no longer parses string variables. The following test script fails on current cvs: <script> nulldata 10 series y=t matrix y2=y mwrite(y2,"test.mat") matrix y3=mread("test.mat") string fileName="test.mat" matrix y4=mread(fileName) </script> but did work on old gretl versions. The error is ? matrix y4=mread(fileName) fileName: No such file or directory Error executing script: halting It seems like mread tries to use filename directly as a string, although it is not quoted. Christoph