The graphical message box for exceptions has been turned off by default, because it was interfering with cdash. Packagers are therefore invited to turn it ON for public packages (since this tends to make users read the error messages).

A major bug has been found in the potential short wave solar radiation calculation: the beam values were actually already projected to the horizontal, leading to a double projection to horizontal when requesting the horizontal components. The whole potential radiation code has been reviewed, comparing line by line with Iqbal. A few variables have been renamed in order to better match the paper. And more detailed comments added to explain some of the most mysterious parameters. The potential ISWR data generator has been adjusted and checked. it can use a measured ILWR to correct for cloudiness if available.