iOS 7 SDK - MediaPlayer Framework - Rolling back transaction

I'm seeing the same issue, though it doesn't seem to cause any problems. I think this is some internal logging that they mistakenly left turned on.

In some cases when the MPMediaQuery is loaded the first time you can have

2013-09-19 00:28:10.636 musiXmatch[4498:1303] {MediaLibrary} Database validation succeeded 2013-09-19 00:28:11.240 musiXmatch[4498:7a0b] {MediaLibrary} Rolling back transaction.

Other strange logs on iOS7 GM are the following

2013-09-19 00:28:13.643 musiXmatch[4498:7b0f] CLTilesManagerClient: initialize, sSharedTilesManagerClient 2013-09-19 00:28:13.647 musiXmatch[4498:7b0f] CLTilesManagerClient: init 2013-09-19 00:28:13.649 musiXmatch[4498:7b0f] CLTilesManagerClient: reconnecting, 0x19504c90 2013-09-19 00:28:13.651 musiXmatch[4498:7d03] CLTilesManagerClient: XPC_ERROR_CONNECTION_INVALID!

Specifically the last messagge XPC_ERROR_CONNECTION_INVALID is a value of the xpc event type when doing something like

xpc_connection_set_event_handler(serviceConnection, ^(xpc_object_t event) {    xpc_type_t type = xpc_get_type(event);

[EDIT]

New interesting CLTilesManagerClient logs.

2013-12-04 15:37:25.695 musiXmatch[274:1303] CLTilesManagerClient: initialize, sSharedTilesManagerClient 2013-12-04 15:37:25.697 musiXmatch[274:1303] CLTilesManagerClient: init 2013-12-04 15:37:25.698 musiXmatch[274:1303] CLTilesManagerClient: reconnecting, 0x1d942d50 2013-12-04 15:37:25.700 musiXmatch[274:7b03] CLTilesManagerClient: XPC_ERROR_CONNECTION_INVALID!