DmOpenDatabaseByTypeCreator error

[Oleg Alpatov]

Hi,all.

Please tell me what possible reasons may cause error message
"MemoryMgrNew.c, Line 4165, NULL handle" when executing
the following line of code:
gDB = DmOpenDatabaseByTypeCreator(DBType, FileCreator, mode);

Database exists, this line, constants and variables remain
unchanged, only thing that changed is new version of
application.

Thanks in advance
Oleg

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