seems that during the move from one provider to another your path was changed.
And now system is not able to find necessary files, 'cause it's searching them with old pathes.
First of all you need to determine new path with your provider.
You need to update 2 files:
- system/coreinfo.php - modify path in CORE definition sting
- seotoaster_core/configs/application.ini - website.path and update its value with new path