| 摘要 |
PROBLEM TO BE SOLVED: To prevent any obstacle due to the difference of the versions of modules operating between a server and a client. SOLUTION: The latest version of a client module 41 is registered in a module storage part 60 by a module registering part 52. When the client module 41 is started by a client 40, the client module 41 compares its own version with the latest version stored in a module storing part 60, and continues the processing when its own version is the latest version. When its own version is not the latest version, the client module 41 displays a message to a user 30, and interrupts the processing.
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