Attempting to create "Fulltext native" search index from "ACP" -> "Maintenance" -> "Database" -> "Search index" generates the following error:

SQL ERROR [ mssqlnative ]

SQLSTATE: 42000 code: 3988 message: [Microsoft][SQL Server Native Client 10.0][SQL Server]New transaction is not allowed because there are other threads running in the session. [3988]

BACKTRACE

FILE: includes/db/dbal.php
LINE: 264
CALL: dbal->sql_error()

FILE: includes/search/fulltext_native.php
LINE: 1190
CALL: dbal->sql_transaction()

FILE: includes/acp/acp_search.php
LINE: 401
CALL: fulltext_native->index()

FILE: includes/acp/acp_search.php
LINE: 46
CALL: acp_search->index()

FILE: includes/functions_module.php
LINE: 507
CALL: acp_search->main()

FILE: adm/index.php
LINE: 74
CALL: p_master->load_active()