无法启用特定模块

Question

我有自定义模块，但我无法启用它。我有几个其他自定义模块，我可以启用和禁用。但是这个特定的模块会抛出错误 -

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    could not initialize a collection:   
 [Orchard.Core.Settings.Descriptor.Records.ShellDescriptorRecord.Features#1][SQL: SELECT
  features0_.ShellDescriptorRecord_Id as ShellDes3_1_, features0_.Id as Id1_, features0_.Id 
  as Id11_0_, features0_.Name as Name11_0_, features0_.ShellDescriptorRecord_id as 
  ShellDes3_11_0_ FROM Settings_ShellFeatureRecord features0_ WHERE 
  features0_.ShellDescriptorRecord_Id=?]

    NHibernate.Exceptions.GenericADOException: could not initialize a collection: 
[Orchard.Core.Settings.Descriptor.Records.ShellDescriptorRecord.Features#1][SQL: 
SELECT features0_.ShellDescriptorRecord_Id as ShellDes3_1_, features0_.Id as Id1_, 
features0_.Id as Id11_0_, features0_.Name as Name11_0_, 
features0_.ShellDescriptorRecord_id as ShellDes3_11_0_ FROM 
Settings_ShellFeatureRecord features0_ WHERE features0_.ShellDescriptorRecord_Id=?] 

    ---> System.Data.SqlClient.SqlException: Timeout expired. 
The timeout period elapsed prior to completion of the operation 
or the server is not responding. 

任何想法为什么这可能只发生在这个模块上？

感谢。