Service Pack 1 has now been released for Sage 200 2011. A full list of the included fixes are available in Sage Support Knowledgebase article 27714 –

Fixes are  include in the following areas:

Core 200 – Stock Valuation report, Timeout errors when running year end.

BOM – Cost Breakdown calculations.

WOP – Bar code expressions on one off documents.

CRM – Integration/Synchronisation.