Ibexpert连接本地firebird数据库报如下错误

[lixuemao]

Attempting to connect to:
E:\PRODD5.FDB

Connecting... Failed!
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Client Library is missing or invalid.
D:\software\db\ibexpert\fbclient.dll

Attempting to connect to services manager... Failed!
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Client Library is missing or invalid.
D:\software\db\ibexpert\fbclient.dll

Disconnecting from database... Passed!

希望哪位给简答一下
谢谢