I would try setting the log-file to "Simple" and see if it fixes things;
We run the following when setting up SQL for RMS in SO/HQ Admin or Studio Express;
BACKUP FIRST!!!
Be sure to change the 'databasename' in the last 2 command lines.
-- Turn on advanced options
EXECUTE SP_CONFIGURE 'show advanced options', 1
RECONFIGURE WITH OVERRIDE
-- Set max server memory = 6400MB for an 8g Server machine -- 1/2 for 4g
EXEC sp_configure'max server memory (MB)',6400;
RECONFIGURE WITH OVERRIDE
-- Turn on Ad Hoc Queries
EXECUTE SP_CONFIGURE 'Ad Hoc Distributed Queries', '1'
RECONFIGURE WITH OVERRIDE
-- Turn off advanced options
EXECUTE SP_CONFIGURE 'show advanced options', 0
RECONFIGURE WITH OVERRIDE
-- Change Recovery Mode to Simple to prevent log file growth
ALTER DATABASE "databasename" SET RECOVERY SIMPLE
-- Turn off AutoClose in Express versions
EXEC sp_dboption 'databasename', 'autoclose', 'FALSE'
BACKUP FIRST!!!