Re-Deployment Fails

First time I deploy my application all works fine. I specify that ports be
setup later. When I make any change and try to re-deploy it gives me the
following errors.

[code:1:9e66caf6ee]Error 1
Object reference not set to an instance of an object.

Error 2 at
Microsoft.BizTalk.Deployment.BizTalkAssembly.GetConnectedPorts(BtsCatalogExplorer explorer, String pipelineFullyQualifiedName)
at Microsoft.BizTalk.Deployment.BizTalkAssembly.RemovePortsUsingPipelines()
at Microsoft.BizTalk.Deployment.BizTalkAssembly.RemovePipelines()
at Microsoft.BizTalk.Deployment.BizTalkAssembly.Remove()
at Microsoft.BizTalk.Deployment.BizTalkAssembly.RemoveNamedModule(String
server, String database, String assemblyName, String assemblyVersion, String
assemblyCulture, String assemblyPublicKeyToken, ApplicationLog log)

Error 3 Unspecified exception: \"
Object reference not set to an instance of an object.\"

Object reference not set to an instance of an object.

Error 4 Failed to add resource(s). Change requests failed for some
resources. BizTalkAssemblyResourceManager failed to complete end type change
request. Object reference not set to an instance of an object. [/code:1:9e66caf6ee]

Any ideas on what I should be looking at? I can’t figure out what the issue
is and how to correct. My solution is split as two projects…
Orchestrations and Schemas. Orchestrations contains orchs and pipelines an
has reference to schemas. Schemas contains all schemas and maps.

Thanks