>>>Colin, thank you for your detailed comments. They shed good light on the nature of the problems. With your advice in another message (Re: VFP 9.0, SP2 now available Thread #1260474 Message #1260835) also in mind, I now see two options.
>>>
>>>Option 1: Uninstall VFP, then reinstall VFP and apply the SP2 Refresh1. Then test which reported bugs are gone and which aren't. Then decide further. This scenario can best be done on a test machine.
>>>
>>>Option 2: Uninstall VFP, then reinstall VFP and apply SP1. Then copy the Report*.app files as found in SP2R1. Then check whether it indeed contains the fix to ReportPreview.App. If not, a restore of the older Report*.App files is required and a reread of your article on how to build my own ReportPreviewer and start coding it might be a viable option. This can all be done on the development machines.
>>>
>>>Update: Bernard Bout has already done some testing (Re: Toolbar in Report Preview not working with SP2 Thread #1261541 Message #1262069). I guess option 1 is a waste of time, so I go for option 2.
>>>
>>
>>What about option 3?
>>
>>Install VFP, Install SP2, Make a copy of the all the Report Apps from SP2, Uninstall VFP (there is no option to uninstall sp2)
>>Reinstall VFP9, install SP1 then overwrite the Report files with those from SP2.
>>
>>Now thw toolbar works and you have the benefits of the advanced classes and apps of Sp2.
>
>Or install SP2 on one test machine and then copy those classes and apps to the machines that have SP1 reinstalled. I see the Report*.app files in 'c:\Program Files\Microsoft Visual FoxPro 9'. Suggestions for any other stuff?

Not sure how but the Help file system from VFP9Sp1 sure looks like a candidate. Maybe someone knows how to do this so that the help Index works again. ADDOBJECT() is also missing that I know of.