On Windows with ifx, often CrysFML functional test programs built with Fortran as well as PyCrysFML functional tests crash on execution with errors such as
forrtl: severe (157): Program Exception - access violation
or
This seems to happen quite randomly. Sometimes, both CrysFML and PyCrysFML tests crashes. Sometimes it crashes in both CrysFML and PyCrysFML tests. Sometimes it's just CrysFML or PyCrysFML. In rare cases, everything works fine.
On 'Ubuntu' with ifx or Windows with ifx everything works as expected.