Hi there,
I'd very like to know if Podium is really the issue here. Like OLi said, plugin conflicts happens. So the 2 fist things to try would be; move all non Cadalog related plugins to a temporary folder, and see if Podium alone in there still cause the crash. Then if it does remove completely Podium see if it still crashes.
If then, everything works as expected make sure you trashed everything related to Podium, make a fresh Podium install (again) to be sure please download from the site.
Thank you!
P.S in case I forget to check back here, please email SU Podium support.