Receive NIL errors and messages not processing when sending using ms queues

Here are a couple of errors I have found in the event log

system.typeinitialization NIL
system.messaging.messagequeue NIL

These occur when trying to send a message through ms queues to a windows
process that processes message through a web service.

I just upgraded the web app to 2.0 and have the web app, web service and
windows process all built from VS 2005SP1 and running on the 2.0
framework.

I have found limited info online about this. Mostly just a post that
says this is a bug that will be fixed with SP1 for Visual Studio which I
am already running.

I deleted one of the queues that was getting this error and recreated
it. And a few messages got through and were processed.

I haven't seen those errors again yet, but now the messages are getting
stuck in the queue and are not being handled.

I haven't done much with the queues before so am looking for any help on
this error and suggestions for troubleshooting.

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