Juliana,
Can you connect to any other Queue Managers? I was getting this error a few months back. Having no luck, I changed the hostname/queue manager name and successfully connected to another queue manager. This led me to believe the problem was in the MQSeries Queue Manager vice the webMethods MQ Adapter.
We never figured out what exactly was wrong, but, when I called IBM for MQSeries support, they forced us to apply their latest MQSeries upgrade (CSD10, the last I checked). After applying this upgrade, we were able to connect, so we let it go at that.
Again, this may or may not be the same issue you’re having, but I just though I’d share our experience with you.
Good Luck!
ted
#webMethods#Integration-Server-and-ESB#Adapters-and-E-Standards