When Boost is used with the new version of Wincache v1.3.7.4, PHP locks up after 24 hours and the site only serves cached content. Server is IIS 8.5, with shared file-system on a UNC network share. An older version of Wincache (1.3.5.0) did not have this issue.

Here is the PHP error:

******BEGIN ERROR******
Level,Date and Time,Source,Event ID,Task Category
Information,6/27/2015 9:10:41 AM,PHP-5.5.25,2,(6),"The description for Event ID 2 from source PHP-5.5.25 cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.

If the event originated on another computer, the display information had to be saved with the event.

The following information was included with the event:

php[7068]
PHP Fatal error: Failure in Wincache[7068] free_memory: Block 0x6ffe53c not in use
in \\192.168.0.143\ISOMWWWSTOR_VOL1\Websites\SITE\wwwroot\sites\all\modules\boost\boost.module on line 1340
******END ERROR******