Report Builder Execution Error

hey

While I was trying to run a report using Report Builder for SQL 2005 Reporting Servcies the following error occured

(Could not load file or assembly 'Microsoft.ReportingServices.SemanticQueryEngine, Version=9.0.242.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. Access is denied.
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An error has occurred during report processing.)

any one could help me in this issue

thank you

BOB

[466 byte] By [BOB_78] at [2007-12-23]