>I read some thread here about installing the SP3 of VFP. They all suggest to go through the setup to install a runtime of vfp.
>I have several installations where I just copy the vfp6r.dll and the vfp6renu.dll in the application directory and it seems to work very well.
>Is there any reason to run the setup? What kind of problem can we get by just copying these two dll's?

The fact is that copying the two files is not an adequate install of VFP6. You can do as you like. There are registration requirements for the runtime, a number of dependencies, and a number of non-self-registration related registry entries needed to make a reliable and consistent install.

As far as what kind of problems you can run into, anything from unexpected crashed, to things not starting in the Explorer, and just about anything that might happen to gfo wrong, if you call for tech support, the first thngs that support will ask will be 'How was the runtime install done?" When you tell them what you did, they'll tell you to do a proper install using a Setup Wizard created install and call them in a couple of days if that doesn't fix your problem...