My magento version is ver. 1.9.1.0.
We saw a blank page at /checkout/cart after applying SUPEE-10570 and compiling. Just to clarify: With deactivated compiler all things went well, with activated compiler we only could see a blank cart page when logged in without any log entries (even after activating all possible logs and developer mode).
Cause:
the function getPasswordTimestamp will invoke two times when visit /checkout/cart.
disabled compiler both invocation work.
enable compiler only the first invocation work, second invocation failed.
can anyone explain the give the good solution?