you need to upgrade your custom style to 3.3.0
it currently shows as for 3.2.2
there are many changes since 3.2.2.
the one causing this problem is a change in the way breadcrumbs are handled.
once you get prosilver upgraded to 3.3.0 you can then see how to fix the breadcrumb problem here:
it looks like your main changes to prosilver are just the css for the colors.
if that is so, then simply get a copy of the 3.3.0 prosilver and edit the css with your colour changes and then replace the one you have with it and you will be done except for the breadcrumb fix above.