Networking Drivecrypt Containers in Windows 7 doesn't work

Hi All
I had a wireless network (Workgroup) and share Drivecrypt containers remotely over the network. I could open the drivecrypt container on either machine remotely transfer files to and from the containers and stream the data from each.
Both machines are running Drivecrypt 5.4 One machine is running Win 7 64 Ultimate the other was running Vista 32bit.
All was Ok until I updated the Vista machine to Win 7 64 Ultimate.
I can no longer access the drivecrypt containers remotely either way.(But they do open locally)
Drivercrypt allows me to see and enter the password for the network container, the container appears as another drive as normal. But if I try to access the drive I get
"T:\ is not accessible
The parameter is incorrect"
Other media can be streamed both ways between computers without a problem.
Another laptop running Vista can still access both Drivecrypt containers on the WIn 7 Computers.
It seems to be just a problem between the two WIN 7 machines
Would anybody know what the problem could be?

Thanks
Nemail