# Papervision3D Classpath
**URL:** https://forum.kirupa.com/t/papervision3d-classpath/261161
**Category:** Uncategorized
**Created:** [May 23, 2008, 5:03pm UTC](https://forum.kirupa.com/t/papervision3d-classpath/261161 "2008-05-23T17:03:04Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@trundrumbalind](https://forum.kirupa.com/u/trundrumbalind)
#### Post date: [May 23, 2008, 5:03pm UTC](https://forum.kirupa.com/t/papervision3d-classpath/261161/1 "2008-05-23T17:03:04Z")
Hi there, I’ve finally downloaded the latest version of Papervision 3d (2.0) but I’ve noticed some big changes, directory-structure-wise which stop my past projects from working!
For example, the plane primitive is no longer in import org.papervision3d.objects.plane. It’s now in org.papervision3d.objects\*\*.primitives.\*\*plane
Now if I upgrade (which obviously I want to do), all my other projects are going to screw up! Is this just a necessary evil and I’m going to have to update everything or is there something I’m missing? Is this going to be something I have to do for the next major rework of PV3D!? Constantly updating old projects?
I’d really rather keep one copy of PV3D in my Flash classes folder and have everything reference that rather than having different versions of PV3D copied directly into each of my project’s individual class paths ☹
Thanks guys,
Dave
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### Author:  [@Anogar](https://forum.kirupa.com/u/Anogar)
#### Post date: [May 23, 2008, 5:23pm UTC](https://forum.kirupa.com/t/papervision3d-classpath/261161/2 "2008-05-23T17:23:50Z")
Hey Dave,
The transition from 1.5 to 2.0 is a huge one - it’s pretty much a full rework of the engine, so the syntax changed in many cases, the class structure changed, and basically none of your old projects will work. This is almost akin to going from AS2 to AS3.
Best of luck,
-Ryan
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### Author:  [@trundrumbalind](https://forum.kirupa.com/u/trundrumbalind)
#### Post date: [May 24, 2008, 2:50am UTC](https://forum.kirupa.com/t/papervision3d-classpath/261161/3 "2008-05-24T02:50:28Z")
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Good point. Hadn’t thought of it like that.😑