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SQL Optimizer for DB2 no longer works

I installed newest TOAD package with optimizer
TOAD works. Optimizer not works.
At startup optimizer show message that "client is not installed".
On next program starts and I see my connection which works from Toad or odbcad32.exe.
When I'm trying to use this connection I see message "The procedure entry point sqledosd_api@16 could not be located in db2app.dll" and "Unable to load library ConnDB2.dll".

I tested it with data server driver packages v10.5fp10_ntx64_dsdriver_EN.exe and v11.1.4fp4_ntx64_dsdriver_EN.exe .