I think the Differential (which is disabled in my install) is used anyway to parse an SVN commit and that raises an exception.
```
[2014-04-22 12:51:59] EXCEPTION: (PhutilProxyException) Error while executing task ID 61011 from queue. {>} (ConduitException) Method 'ConduitAPI_differential_parsecommitmessage_Method' belongs to application 'Differential', which is not installed. at [/home/sites/phabricator/web/phabricator/src/applications/conduit/call/ConduitCall.php:204]
#0 ConduitCall::buildMethodHandler(differential.parsecommitmessage) called at [/home/sites/phabricator/web/phabricator/src/applications/conduit/call/ConduitCall.php:21]
#1 ConduitCall::__construct(differential.parsecommitmessage, Array of size 2 starting with: { corpus => Mobile - Event Edit - Ticket Price Field Extends Beyond Window }) called at [/home/sites/phabricator/web/phabricator/src/applications/diffusion/query/lowlevel/DiffusionLowLevelCommitFieldsQuery.php:23]
#2 DiffusionLowLevelCommitFieldsQuery::executeQuery() called at [/home/sites/phabricator/web/phabricator/src/applications/diffusion/query/lowlevel/DiffusionLowLevelQuery.php:23]
#3 DiffusionLowLevelQuery::execute() called at [/home/sites/phabricator/web/phabricator/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryCommitMessageParserWorker.php:49]
#4 PhabricatorRepositoryCommitMessageParserWorker::updateCommitData(Object DiffusionCommitRef) called at [/home/sites/phabricator/web/phabricator/src/applications/repository/worker/commitmessageparser/PhabricatorRepositorySvnCommitMessageParserWorker.php:15]
#5 PhabricatorRepositorySvnCommitMessageParserWorker::parseCommit(Object PhabricatorRepository, Object PhabricatorRepositoryCommit) called at [/home/sites/phabricator/web/phabricator/src/applications/repository/worker/PhabricatorRepositoryCommitParserWorker.php:44]
#6 PhabricatorRepositoryCommitParserWorker::doWork() called at [/home/sites/phabricator/web/phabricator/src/infrastructure/daemon/workers/PhabricatorWorker.php:85]
#7 PhabricatorWorker::executeTask() called at [/home/sites/phabricator/web/phabricator/src/infrastructure/daemon/workers/storage/PhabricatorWorkerActiveTask.php:123]
#8 PhabricatorWorkerActiveTask::executeTask() called at [/home/sites/phabricator/web/phabricator/src/infrastructure/daemon/workers/PhabricatorTaskmasterDaemon.php:19]
#9 PhabricatorTaskmasterDaemon::run() called at [/home/sites/phabricator/web/libphutil/src/daemon/PhutilDaemon.php:85]
#10 PhutilDaemon::execute() called at [/home/sites/phabricator/web/libphutil/scripts/daemon/exec/exec_daemon.php:112]
```