It's most likely _Memberdata property that gives the error. You'll have to make sure that it does not exceed 255 character size limit of previous VFP versions.

>I've been using VFP9 for a few years now and I'm getting ready to work with a team that is still using VFP7. I guess they purchased VFP8 but ran into some problems migrating their projects and decided to return to VFP7.
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>If I can't convince them to upgrade, I'd like to use VFP9 for my tasks and then let them compile the code in VFP7. I know that I can't use any of the new commands...but what other issues should I be aware of if I decide to do this?
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>I started testing the scenario by taking a recent VFP9 project and compiling it in VFP7 but received "Property value is out of bounds" errors with a couple class libraries and I couldn't even open the files in VFP7. The same thing happened when I tried to compile in VFP8.
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>Any help would be appreciated. Thank you.
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>Aaron Jacka