Sounds like a client that is co-resident in the TSM server system, using the Shared Memory Communications method, as though the client is at a very different level than the server, so the server doesn't understand what the client is saying; else there may be problems in the shared memory area. I would start by looking for system changes which may have been effected, which precipitated the problem condition, as possibly the TSM client being boosted to a high 5.3 level relative to the 5.2 server.
Richard Sims
