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Hi !

I'm just installed MySQL 5.0.37 and get an error when open a query :
"Invalid class typecast". Before I use MySQL 5.0.27 and no error !
(the source code is unchanged sins server is reinstalled,
I'm make a data dump on old server and restore it to the new server)

MyDAC 4.40.0.23, Delphi 7.

It is posible that the new version of server and MyDAC is incompetible ?
(sory for my English...)

Probably there were changes with fields describing between these two versions of MySQL Server. This problem can arise because you have created fields for a dataset objects like TMyQuery, TMyTable in design time. Please try to determine what field type causes this problem. A simple project that includes script to create server object(s) would be very helpful to reproduce this problem. You can send it to me at evgeniyd*crlab*com.