Thank you for your report.

Do you mean that with 3.0.5 RecordCount wasn't -1?

Also, could you please provide your table structure. I tried your code with arbitrary table, and could not re-create the problems you described

With 3.0.6 using adUseServer -> Record Count -1
With 3.0.5 using adUseServer -> Record Count -1

Same behaviour, might be correct, I'm not that deep into the stuff...

With 3.0.6 using adUseClient -> E_FAIL Error
With 3.0.5 using adUseClient -> Works fine -> Record Count > 0 and I get valid Data from Table

I will post the Table structure later!

CREATE TABLE IF NOT EXISTS `myTable`
(
`id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
`StartTime` DATETIME NOT NULL,
`Duration` TIME NOT NULL,
`Shift` VARCHAR(32) NULL DEFAULT '',
`Job` VARCHAR(80) NULL DEFAULT '',
`ProductID` INT(10) NULL DEFAULT '0',
`Product` VARCHAR(50) NULL DEFAULT '',
`NPR` FLOAT NULL DEFAULT '0',
`State` TINYINT(4) NOT NULL, e.g. Sched DT',
`StopCode` VARCHAR(20) NULL DEFAULT '',
`StopDescription` VARCHAR(80) NULL DEFAULT '',
`MachineCode` VARCHAR(20) NULL DEFAULT '',
`MachineDescription` VARCHAR(32) NULL DEFAULT '',
`ProductCounter` INT(10) UNSIGNED NULL DEFAULT '0',
`RejectCounter` INT(10) UNSIGNED NULL DEFAULT '0',
`AdditionalRejects` INT(10) NULL DEFAULT '0',
`OpComment` VARCHAR(32) NULL DEFAULT '',
`Acknowledged` TINYINT(4) UNSIGNED NULL DEFAULT '0',
`SerialNr` VARCHAR(15) NULL DEFAULT '',
PRIMARY KEY (`id`)
)
COMMENT='...'
COLLATE='utf8mb4_general_ci'
ENGINE=InnoDB
ROW_FORMAT=COMPACT

Thanks, I could get the error using your table definition. Next step is to fix it.