I installed 5.7.3.1 on Jumpline the assured me that all the requirements for 5.7.3.1 are met on the server, even increased the memory limit on php.ini. But I still get this same error (see below). I can log in and see the page but when I select the edit pen and click on a content area it won't give me the option to edit. I also tried to install a new theme from the marketplace but it would not install. I've searched the forum for a solution but can't find anything that suggests something that hasn't already been done.
See site at http://www.arcilinc.org

Any help is greatly appreciated.

An unexpected error occurred.
PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20100525/apc.so: cannot open shared object file: No such file or directory