I just tried to install the current SVN version and got this error during the install:
Fatal error: Allowed memory size of 25165824 bytes exhausted (tried to allocate 10104 bytes) in C:\xampp\htdocs\MODx097\core\xpdo\om\xpdoobject.class.php on line 38
My memory_limit is set to 128M.
I flushed the permissions and sessions first, cleared the cache, and deleted core/packages/transport.core.zip and core/packages/core before the build.
The build took about twice as long as usual (60+ sec) if that’s relevant.