I noticed a bug in the MSQuery component... When I use parameters in my SQL String, and try to open the Collection Editor by clicking on the "Params" property in the Object Inspector, this only leeds me to the following message,, without opening the collection:
Assertion failure (d:\Projects\Delphi\Dac\Souce\Deign\DADesign.pas, line 522)
It seems, that you have still hardcoded this path somewhere in the component, since D:\ drive on my laptop is the CD drive.
I still can set the parameters by double-clicking the query component and move to the parameters tab, so the fix is probably not that urgent.
Tom