>I have been asked by a client to work on an application custom developed for them by a developer who is no longer available to them.
>
>They provided a copy of the source code to me, but as soon as I tried to open the main project file, VFP complained bitterly about not finding a series of class libraries (vcx files) the all began with vpm.
>
>Am I correct in assuming that this app was developed with Visual Pro Matrix?

Yes, I think it is. If the classlibs include VPMAPP, VPMCTRLS, VPMFORMS, VPMSEC and VPMRPT, you are right, especially, if you also have classlibs where the VPM prefix is replaced with PRO.

>Does this also mean that I will not be able to modify this app without a copy of VPM?

You need to have those classlibs to modify the app and they are part of the ProMatrix framework and you must have a licence to use them.
Whenever I have to have a project with another shop, I always have them but a copy of VPM, even if they are not doing any development. That way, they could never get into the situation, you are in now.

I would suggest that you contact promatrix (www.promatrix.com) and find out what your options are.

>TIA
>
>Potter Orr

Regards,