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Gilbert, Apparently, the downstream LDM couldn't connect to the upstream LDM server via port 388 and so tried using the upstream's portmapper. This succeeded but, due to a latent bug in the downstream LDM code, resulted in a NULL client handle (and boom!). I've corrected the code and am working on making a new release. In the meantime, ensure that the upstream LDM is available on port 388 and, if possible, stop the portmapper on the upstream site (many sysadmins consider it a security risk, anyway). Again, thanks for sending this in. Regards, Steve Emmerson Ticket Details =================== Ticket ID: UEV-538539 Department: Support LDM Priority: Normal Status: Closed