RE: Restores failing with exit code 790

Here's the error in detail.

Dev-Thor: Restore - Failed
==========================

Restoring full backup - Successful
----------------------------------

This operation completed successfully.

Restoring RIP_Onyx (database) from:
\\redgate1\SQLBackups\thor\Onyx\FULL_Onyx_20130113_025441.sqb
Processed 4387672 pages for database 'RIP_Onyx', file 'Vanilla500054_Data' on file 1.
Processed 9 pages for database 'RIP_Onyx', file 'Vanilla500054_Log' on file 1.
RESTORE DATABASE successfully processed 4387681 pages in 470.348 seconds (72.879 MB/sec).
SQL Backup process ended.



Restoring differential backup - Failed
--------------------------------------

This operation failed with errors.

Restoring RIP_Onyx (database) from:
\\redgate1\SQLBackups\thor\Onyx\DIFF_Onyx_20130116_023012.sqb
Thread 0 error:
Process terminated unexpectedly. Error code: -2139684860 (An abort request is preventing anything except termination actions.)
SQL error 3013: SQL error 3013: RESTORE DATABASE is terminating abnormally.
SQL error 3136: SQL error 3136: This differential backup cannot be restored because the database has not been restored to the correct earlier state.
SQL Backup exit code: 790
SQL error code: 3136



Updating SQL Server information - Pending
-----------------------------------------

Operation pending.