With a core name like "mycore" PreviewExtracor init function splits by "" the core name to configure the server with the last item of the split like "core.dummy.com", this is used in posterior process to detect the core name by the detect_core() function, after this the core name used by casebox is "core" instead of "my_core" and all the preview generation will fail without any error.
I solved this changing all my core names to camel case, really easy to solve, but it was very hard to debug, a fix or a warning on this i think is needed.
With a core name like "mycore" PreviewExtracor init function splits by "" the core name to configure the server with the last item of the split like "core.dummy.com", this is used in posterior process to detect the core name by the detect_core() function, after this the core name used by casebox is "core" instead of "my_core" and all the preview generation will fail without any error.
I solved this changing all my core names to camel case, really easy to solve, but it was very hard to debug, a fix or a warning on this i think is needed.