I use ActiveX control ( namely FlyTreexPro from 9rays.com ) in my form.
When control creators released a new version of it and I ran installation procedure resulting in OCX overwriting , my form started to complain "OLE error code 0x80040154 : Class not registered. OLE object is being ignored. Record number ..." My understanding was that all OCX upgrades should be transparent for form , it picks up the newer one automatically. At the same
time I've got VB form for testing for which this upgrade didn't result in any problem. Funnily enough if I create a new form and include this upgraded version ( let's say 100 ) and then roll back OCX to version 93, I don't have any complaint either. My question is what may cause such a behaviour :
1. Something strange in .scx/sct files ( if so where to search )
2. Control creators missed something which is required when new version is released.
3. We should expect such a behaviour with Foxpro forms and I need to include control again from toolbar and then paste methods saved in advance.

Thank you
Michael