Microsoft flexgrid Control: runtime error '438' Object does not support this property or method

I am maintaining a legacy Microsoft Access application that uses Microsoft Flexgrid 6.0 . It recently started throwing the following error:

Runtime error '438' Object does not support this property or method

People say this error can be caused by the KB960715 application , which sets killbits on various ActiveX control methods that were considered a security risk. But this or a completely different security update has been applied recently.

Others say that installing Microsoft Visual Basic 6.0 SP6 for the cumulative update will update the flex grid. This requires VB6 to be installed as a prerequisite, so I installed it on my computer and then updated and extracted the updated MsFlxGrd.ocx file (version: 6.1.98.12) and copied it to the application machine, but the error still prevails ...

Someone here says that you can disable killbit in the registry. But there are several hundred nodes in the location they suggest, none of which have the same pointer as the one they point to.

Any ideas?