Function Sequence Error – MySQL

If you are seeing an error that looks like this when importing Cart32 clients from Access to MySQL or when using Cart32 with MySQL:

[Microsoft][ODBC Driver Manager] Function sequence error


Then you need to update a file called myodbc.dll. That file is located in the winntsystem32 directory.

You can download the latest MyODBC installation from:

Then stop MySQL and IIS and run the MyODBC setup and then restart IIS and MySQL.

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