Event Type:        Error

Event Source:        BizTalk ESB Toolkit 2.0

Event Category:        None

Event ID:        6060

Date:                1/31/2010

Time:                7:06:00 AM

User:                N/A

Computer:        WS03_OFFICE07

Description:

Parameter name cannot be null or an empty string.

Parameter name: key

Source: Microsoft.Practices.ESB.Resolver.ResolverMgr

Method: System.Collections.Generic.Dictionary`2[System.String,System.String] Resolve(Microsoft.Practices.ESB.Resolver.ResolverInfo, Microsoft.BizTalk.Message.Interop.IBaseMessage, Microsoft.BizTalk.Component.Interop.IPipelineContext)

Error Source: Microsoft.Practices.EnterpriseLibrary.Caching

Error TargetSite: Void ValidateKey(System.String) 

Error StackTrace:    at Microsoft.Practices.EnterpriseLibrary.Caching.Cache.ValidateKey(String key)

   at Microsoft.Practices.EnterpriseLibrary.Caching.Cache.GetData(String key)

   at Microsoft.Practices.EnterpriseLibrary.Caching.CacheManager.GetData(String key)

   at Microsoft.Practices.ESB.Cache.Cache`1.Get(String key, Boolean returnAndRemove)

   at Microsoft.Practices.ESB.Cache.Cache`1.Get(String key)

   at Microsoft.Practices.ESB.Resolver.ResolverMgr.GetResolver(ResolverInfo info)

   at Microsoft.Practices.ESB.Resolver.ResolverMgr.Resolve(ResolverInfo info, IBaseMessage message, IPipelineContext pipelineContext)

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

The issue was that I had the BRI string like this: BRI:// instead of BRI:\\  in the pipeline component's configuration.  The latter is the correct way…

Read the complete post at http://geekswithblogs.net/andym/archive/2010/02/02/137758.aspx